There's many companies that have reproduced the tictok algorithm. Surely if it was sold, the multibillion dollar company would have no issue with that aspect.
What's an example of a company that reproduced the TikTok algorithm?
Facebook Reels and Youtube Shorts have pretty good implementations at this point, especially facebook, it is kind of scary. But I didn't use the original TikTok app so I don't know if TikTok is somehow better than these (I only started watching them because they started placing them in my Facebook and Youtube feed, sneaky!).