When the Trump administration came close to forcing a divestment/shutdown on TikTok in 2020, Americans were 10% of TikTok's user base but 50% of revenue.

Of the top 50 most-followed accounts <https://en.wikipedia.org/wiki/List_of_most-followed_TikTok_a...>, 21 of 49 (not including TikTok itself) are American.