Okay. I found this for your question.

"is it a big deal if it goes away?"

TikTok delivers more than just entertainment: it fuels significant economic growth for more than seven million businesses and the U.S. economy as a whole by helping to support more than $24 billion in gross domestic product (GDP), and more than 224,000 American jobs, delivering a competitive edge to small businesses across the nation.

The study also found that nearly 40 percent of SMBs say TikTok is critical to their businesses' existence, which is home to seven million businesses and 170 million active users in the US.

The research by Oxford Economics also shows:

224,000 jobs were supported by SMBs use of TikTok as a platform to grow and expand their business;

SMBs use of TikTok as an advertising and marketing platform supported a total of $5.3 billion in taxes to the US government in 2023;

and

TikTok’s US operations themselves supported an additional $8.5 billion contribution to the GDP, $2 billion in taxes, and 59,000 jobs across the US economy in 2023.