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Illustration: Sarah Grillo/Axios

TikTok's explosive rise has given the world a new generation of influencers and memes that befuddle people over the age of 21. It has also handed Facebook a new tool in the social giant's effort to fend off wide-reaching antitrust action.

Why it matters: To neutralize concerns about their market power, Facebook and other tech giants have to successfully define the markets they compete in as broad and teeming with other players ready to challenge their dominance.

What they're saying: During a recent House Judiciary Committee hearing on the market power of online platforms, Facebook head of global policy development Matt Perault pointed to TikTok as evidence that it's still possible to create a successful social network more than a decade after Facebook took off.

  • “We compete with companies from all around the world," he said. "TikTok, for example, a Chinese app launched less than three years ago, has been downloaded more than a billion times and was the most downloaded iOS app in 2018.”

Rep. David Cicilline (D-R.I.), the chairman of the House Judiciary antitrust subcommittee, seemed concerned enough about Facebook's TikTok argument that he tried to dismiss it preemptively in his opening statement at the hearing.

  • He said that notwithstanding "the growing popularity of TikTok … Facebook captures over 80 percent of global social media revenue.”

Flashback: TikTok, which is owned by a Chinese company called ByteDance, has seen its influence and user base grow substantially in the United States since it was introduced to a stateside audience via a rebrand of the lip-sync app Musical.ly.

  • Young people in particular have been drawn to the ability to share 15-second looping videos often riffing on established memes or popular sound clips. TikTok's appeal echoes that of Vine, the beloved video-sharing app shut down by Twitter in 2016.
  • The app has accumulated cultural capital as well. The artist Lil Nas X's track "Old Town Road" saw its popularity surge earlier this year thanks in part to TikTok.
  • Facebook has, in fact, tried to copy the app's success with a similar product called Lasso.

The big picture: Facebook's comments about TikTok come as it, Google, Amazon and Apple prepare cases for government regulators arguing that they operate in competitive marketplaces.

  • People familiar with Facebook's thinking on competition issues said Facebook views TikTok's rapid growth as one key example in its broader antitrust defense.
  • The company particularly sees it as evidence that Facebook’s reach has not limited the barriers to entry for new startup social products, one of the people said.

Yes, but: Unmentioned in Facebook's comments about TikTok is the fact that it not only competes with Facebook, but is one of its advertising customers as well.

  • A source familiar with the matter said that TikTok had spent substantially on online advertising to acquire new users late last year and early this year, including on Facebook.
  • TikTok does not release its user numbers, though in January one firm estimated that it was adding tens of millions of new users a month.

TikTok is not the only company Facebook cites as an important competitor. Others range from video sites like YouTube to messaging applications like Viber and Telegram.

The bottom line: Facebook's TikTok argument is unlikely to placate its most fervent critics.

  • Asked last week about Facebook's argument around TikTok, presidential candidate Sen. Elizabeth Warren (D-Mass.) burst into laughter for two seconds, paused as we got onto an elevator, then laughed again.
  • She said that an argument like that coming from Facebook "is a reminder: these guys have too damn much power. It makes them arrogant and disconnected from reality, and I laughed out loud.”

Go deeper

Updated 13 mins ago - Politics & Policy

Senators grill top Pentagon leaders over Biden's Afghanistan exit

Photo: Carolone Brehman/Pool/AFP via Getty Images

Defense Secretary Lloyd Austin, Joints Chiefs of Staff Chairman Gen. Mark Milley, and the head of U.S. Central Command, Gen. Frank McKenzie, are testifying before Congress for the first time since the chaotic U.S. withdrawal from Afghanistan.

The latest: Austin said in his opening statement that military leaders began planning for a non-combatant evacuation of Kabul as early as the spring, and that this is the only reason U.S. troops were able to start the operation so quickly when the Taliban captured the city. "Was it perfect? Of course not," Austin acknowledged.

Congress must raise the debt limit by Oct. 18, Yellen warns

U.S. Treasury Secretary Janet Yellen during a press conference at the Capitol on Sept. 23. Photo: Sarah Silbiger/Bloomberg via Getty Images

Treasury Secretary Janet Yellen told House Speaker Nancy Pelosi in a letter Tuesday that the United States will likely begin to default on its loans shortly after Oct. 18 if Congress fails to raise or suspend the debt ceiling by then.

Why it matters: The U.S. has never defaulted on its financial obligations, and Yellen has previously warned that doing so would cause irreparable damage to the U.S. economy and global financial markets.

Ben Geman, author of Generate
44 mins ago - Energy & Environment

The energy crises roiling Europe and China — and beyond

Data: FactSet; Chart: Axios Visuals

Energy crises in Europe and China are spilling into economic forecasts, supply chains and beyond.

Driving the news: Europe has for weeks been facing sky-high natural gas and power prices, while China — the world's second-largest economy — is facing electricity shortages that are hobbling factories.