During the depths of the Covid pandemic, with restaurants around the country facing an existential crisis, DoorDash CEO Tony Xu had an unconventional proposal. He wanted to cut commissions. Chief Business Officer Keith Yandell worried that such a move would result in a massive hit to profits ahead of the company's planned IPO. But Xu made a persuasive case."If restaurants don't thrive, we cannot," Yandell told CNBC in a recent interview, recalling Xu's perspective at the time. "We need to take a leadership position."## The Rise of DoorDashSince starting DoorDash on the campus of Stanford University in 2013, the now 40-year-old CEO has navigated the notoriously cutthroat and low-margin business of food delivery, building a company that Wall Street today values at close to $90 billion. The stock has emerged as a tech darling this year, jumping 23%, while the Nasdaq is still down for the year largely on tariff concerns.More than four years after its IPO, net profits remain slim. But that's not getting in the way of Xu's mission to become an industry consolidator, using a combination of cash and new debt to fuel an acquisition spree at a time when big tech deals remain scarce. Earlier this month, DoorDash scooped up British food delivery startup Deliveroo for about $3.9 billion and restaurant technology company SevenRooms for $1.2 billion.## The Acquisition Strategy"What we've delivered for a customer yesterday probably isn't good enough for what we will deliver for them today," Xu told CNBC's "Squawk Box" after the deals were announced. The San Francisco-based company has a history with scooping up competitors to grow market share. In 2019, it bought food delivery competitor Caviar for $410 million from Square, now known as Block. About two years later, DoorDash said it was paying $8.1 billion for international delivery platform Wolt.The company didn't make Xu available for an interview for this story, but provided a statement about the company's acquisition strategy. "We're very picky, very patient, and conscious that, for most companies, deals don't work out in hindsight," the company said. "When we see an opportunity that brings value to customers, expands our potential to empower local economies around the world, and has a path to strong long-term returns on capital, we tend to push our chips in."## Taking on the SuburbsDoorDash differentiated itself early on by cornering suburban markets that had fewer delivery options, while other players attacked city centers. When Covid shut down restaurant dining in early 2020, DoorDash capitalized on the booming demand for deliveries. Revenue more than tripled that year, and grew 69% in 2021.Colleagues and early investors credit a customer-first focus for much of Xu's success. Gokul Rajaram, who joined DoorDash through its Caviar acquisition, described Xu as "the best operational leader in the U.S." after Amazon founder Jeff Bezos.## The Future of Food DeliveryRestaurants haven't universally viewed DoorDash as an ally. Commissions can reach as high as 30%, which is a hefty cut to fork over. Many restaurants have reluctantly paid the high fees because of DoorDash's dominant market share, which reached an estimated 67%. In 2021, the company introduced three tiers of pricing, with a basic option at 15% for more price-sensitive businesses.DoorDash needs the high fees in order to stay in the black. The company's contribution profit as a percentage of total marketplace volume hovers below 5%. Despite the challenges, Xu remains committed to his mission to become an industry consolidator, using his company's cash and debt to fuel an acquisition spree.## The Legacy of Tony XuXu often attributes his entrepreneurial spirit to his parents. His mother worked as a doctor in China, and juggled three jobs in the U.S. for over a decade, saving up enough to eventually open a medical clinic. His father worked as a waiter while pursuing a Ph.D. Xu said on the podcast that watching his mom gave him a deep understanding of what it takes to run a small business, which came in handy in DoorDash's early years as he was trying to convert restaurants into customers.Early workers recall memories of Xu pulling up in a dilapidated green 2001 Honda Accord to team events, or participating in company knockout basketball games referred to as "knockys," next to the animal hospital in Palo Alto, which DoorDash briefly called its headquarters. Xu also personally approved every offer for the company's first 4,000 employees.Xu spends many mornings answering customer service complaints. He often drops his kids off at school and, after tucking them in at night, hops on calls with international regions, colleagues say. Xu is an avid Gold State Warriors basketball fan but has a soft spot for the Chicago Bulls, having spent many years in Illinois.