Probably not but the TikTok has to pivot before they loose steam and start being a coglomorate otherwise they Will eventually fade so it depends on how successfully they execute this. Meantime Facebook just needs to catch the next TikTok to be relevant again.
It’s time to stop Facebook buying companies then - how anyone approved them buying WhatsApp is beyond my understanding. I really don’t like TikTok, but I really don’t like Facebook (the company) a bit more, so I hope TikTok does well and will not be bought.