Facebook the company will need to buy up all the grassroots social media platforms that sprout up. That costs money and isn't possible in China where they can't buy Tik Tok. That's why there is such a furore by FB backed lobbyist to make Tik Tok a terrorist platform. Long term FB will eventually die as young folk will not want to use the platform old folk do and older folk are less influence by ads on these platforms. It's a slippery slope for FB but there will always be a new platform that sprouts that the cool kids all use.