DoorDash

SpaceX

DoorDash

DoorDash operates a three-sided marketplace connecting restaurants, delivery drivers (Dashers), and consumers. Revenue comes from three streams: commissions charged to restaurants (typically 15-30% of the order value), delivery fees and service fees charged to consumers, and DashPass subscription revenue ($9.99/month for free delivery and reduced fees).

The DashPass subscription is the retention engine. Over 18 million subscribers pay monthly whether they order or not, creating predictable recurring revenue.

Subscribers order more frequently (about 4x more than non-subscribers), increasing order volume.

Advertising is the emerging high-margin business. Restaurants pay for promoted listings and sponsored placements in the app.

This is essentially a search advertising business built on top of a logistics network. Ad revenue has grown to over $1 billion annually — and it's nearly pure profit because it costs almost nothing to display an ad.

SpaceX

SpaceX makes money three ways. First, launch services — companies and governments pay SpaceX to put their satellites into orbit.

A Falcon 9 launch costs about $67 million, which undercut the competition by 75% when it debuted. Second, Starlink — SpaceX's own satellite internet constellation, which is now generating over $6 billion in annual revenue from 4+ million subscribers.

Third, government contracts — NASA pays SpaceX to ferry astronauts to the International Space Station and the DoD pays for national security launches.

The secret sauce is reusability. Before SpaceX, every rocket was used once and thrown into the ocean.

SpaceX figured out how to land the first stage booster back on Earth and fly it again. A single Falcon 9 booster has flown over 20 times.

That's like the difference between throwing away an airplane after every flight versus keeping it for decades.

DoorDash

Tony Xu grew up watching his mother work multiple restaurant jobs after the family immigrated from Nanjing, China to Illinois. She washed dishes, waited tables, and cooked — sometimes all in the same week at different restaurants.

That experience gave Xu an unusual understanding of how brutally hard the restaurant business is.

At Stanford in 2012, Xu and classmates Stanley Tang, Andy Fang, and Evan Moore were in a startup class looking for a business idea. They interviewed over 200 small business owners and kept hearing the same problem: restaurants wanted to offer delivery but couldn't afford to hire drivers.

Domino's and Pizza Hut had fleets. Your local Thai place didn't.

Their solution was comically low-tech. They built a one-page website called PaloAltoDelivery.com, listed menus from local restaurants (without asking permission), and put their personal phone numbers on the site.

When orders came in, they drove the food themselves. The first order was pad thai from a restaurant in Palo Alto.

Within months, they were drowning in orders and realized this was a massive business. They incorporated as DoorDash in January 2013 and got into Y Combinator that summer.

SpaceX

In 2001, Elon Musk had just sold PayPal to eBay for $1.5 billion and was sitting on roughly $180 million after taxes. Most people would buy an island.

Musk decided to buy rockets. His original idea was even weirder — he wanted to send a small greenhouse to Mars called "Mars Oasis" to reignite public interest in space exploration.

He flew to Russia three times to buy refurbished ICBMs. The Russians kept raising the price and at one point literally spat on him.

On the flight home from that last failed Russia trip, Musk opened a spreadsheet and started calculating the raw material costs of building a rocket from scratch. He realized the materials were only about 3% of the typical price of a rocket.

The rest was markup, inefficiency, and monopoly pricing by companies like Boeing and Lockheed Martin. He decided to build his own.

SpaceX was founded in June 2002 in a warehouse in El Segundo, California. Musk put in $100 million of his own money.

He hired Tom Mueller, a legendary rocket propulsion engineer who had been building rocket engines in his garage as a hobby. The first rocket, Falcon 1, was supposed to be the cheapest orbital rocket ever built.

It took six years and three spectacular explosions before it finally worked.

DoorDash

DoorDash won the US market through obsessive focus on suburban and mid-market restaurants — the segments Uber Eats and Grubhub ignored. While competitors fought over Manhattan and San Francisco, DoorDash was onboarding every Chinese restaurant and pizza shop in Tucson and Des Moines.

By the time competitors noticed, DoorDash had locked up the majority of US restaurants.

The "last-mile logistics" expansion is the long game. DoorDash now delivers groceries (partnerships with Albertsons, Rite Aid), convenience items (DashMart dark stores), alcohol, pet supplies, and retail products.

The thesis is that once you have a network of drivers and a consumer habit of ordering through an app, you can deliver anything — not just food.

The Wolt acquisition for $8.1 billion in 2022 was the international play. Instead of grinding through country-by-country expansion, DoorDash bought the leading delivery platform in 23 countries across Europe and Asia.

Wolt brought strong unit economics and a beloved brand, especially in the Nordics.

SpaceX

SpaceX's growth strategy was simple: be cheaper than everyone, then be better than everyone, then be the only option.

They started by undercutting the launch market. The United Launch Alliance (Boeing + Lockheed Martin joint venture) was charging $300-400 million per launch.

SpaceX offered $67 million. Government agencies and commercial satellite companies started lining up.

Reusability was the real game-changer. Landing a rocket booster looked like science fiction when SpaceX first attempted it in 2013.

They failed over and over — spectacular ocean landings, explosions on drone ships, near-misses. But in December 2015, a Falcon 9 first stage landed back at Cape Canaveral.

It was the first time an orbital-class rocket had ever landed after a mission. Now they do it routinely — it's almost boring.

Starlink created a completely new revenue stream. Instead of just launching other people's satellites, SpaceX launched thousands of its own.

By 2024, Starlink had over 4 million subscribers and was generating billions in revenue. It turned SpaceX from a launch company into a telecom company.

DoorDash

Profitability has been the constant question. DoorDash lost money every year through its IPO and beyond, finally turning consistently profitable in 2023.

The food delivery business has razor-thin margins — restaurants want lower commissions, drivers want higher pay, and consumers want lower prices. Squeezing profit from that three-way tension is incredibly hard.

Regulatory risk is real and growing. Cities and states have capped delivery commissions (New York City caps at 15% for delivery, 5% for marketing).

Worker classification lawsuits keep coming — are Dashers employees or independent contractors? California's Prop 22 temporarily settled this for California, but the debate rages everywhere else.

Each new regulation shaves margin.

Uber Eats is the forever competitor. Uber's massive ride-sharing network gives them built-in driver supply and brand recognition.

They're willing to lose money on Eats to keep their broader ecosystem sticky. DoorDash and Uber Eats together control about 90% of US delivery, and neither can afford to cede ground.

SpaceX

The early days nearly killed the company. SpaceX's first three Falcon 1 launches all failed.

The first one in 2006 crashed 25 seconds after liftoff due to a corroded fuel line nut. The second in 2007 reached space but the second stage shut down early.

The third in 2008 failed because the first and second stages collided during separation. Musk had enough money for one more attempt.

If flight four failed, SpaceX was dead.

Flight four worked. On September 28, 2008, Falcon 1 became the first privately developed liquid-fuel rocket to reach orbit.

Musk has said he was so stressed during that period he was throwing up regularly.

The financial pressure was existential. Musk was simultaneously funding Tesla, which was also on the brink of bankruptcy in 2008.

He had to split his last $40 million between the two companies. He borrowed money for rent.

But right at the end of 2008, NASA awarded SpaceX a $1.6 billion contract to resupply the International Space Station. That contract saved the company.

Starship development has been its own saga. The rocket has exploded multiple times during testing.

Each failure costs hundreds of millions. But SpaceX treats failures as data — they move faster by blowing things up and iterating than competitors do by being cautious.

DoorDash

DoorDash Marketplace — the core food delivery platform connecting consumers to 390,000+ restaurant partners across the US, Canada, Australia, Japan, and Germany. DashPass — a subscription program offering $0 delivery fees and reduced service fees for $9.99/month.

The loyalty engine of the entire business. DoorDash Drive — a white-label delivery service that lets any business (not just restaurants) use DoorDash's driver network to fulfill their own orders.

Basically DoorDash as a logistics API. DoorDash for Business — a corporate platform for team meals, employee benefits, and office food programs.

Wolt — the European food delivery platform DoorDash acquired for $8.1 billion in 2022, now the company's international expansion vehicle.

SpaceX

Falcon 9 is the workhorse — the most-launched rocket in the world. It carries satellites to orbit and astronauts to the ISS, and the first stage lands itself for reuse.

Falcon Heavy is three Falcon 9 boosters strapped together — the most powerful operational rocket in the world until Starship came along. Dragon is the spacecraft that carries astronauts and cargo to the ISS.

It's the only American vehicle currently flying humans to space. Starlink is the satellite internet service — over 6,000 satellites in orbit delivering broadband to 100+ countries.

Starship is the big one — the tallest and most powerful rocket ever built, designed to carry 100+ people to Mars. It's still in testing but has already completed a full flight.

DoorDash

Sequoia Capital has been the most consequential investor, leading multiple rounds and backing Tony Xu from Y Combinator onward. Khosla Ventures, Kleiner Perkins, and SoftBank Vision Fund participated in growth rounds.

Y Combinator was the starting point (Summer 2013 batch). The December 2020 IPO raised $3.4 billion at a $39 billion valuation, making it one of the biggest tech IPOs of that year.

SpaceX

Founders Fund, Draper Fisher Jurvetson, Google, Fidelity Investments, Valor Equity Partners, Baillie Gifford, a]6z (Andreessen Horowitz), NASA (as customer/partner)