Anyway, most people fled Facebook because they didn't want a single identity linked to every kind of thing they post. That's why the alternatives keep their users even when they are owned by Facebook.
Also, FB wasn't first-to-market.
Re: "FB wasn't first-to-market"
What platform then first connected close peer groups via requiring a university/college email address for login, for the platform to then quickly associated those users with each other relevancy wise - leading to the network effects that quickly launched Facebook?
(Zuckerberg knowing that there only needed to be one such platform, why he lied to/misled the ConnectU twins who were actively paying him to develop ConnectU - to which he launched TheFacebook first to get an advantage)
More or less the same thing
China runs a risk of any sufficiently isolated economy; its consumer preferences start diverging from the rest of the world's. The intentional isolation of the Chinese economy through measures like protectionism and the Great Firewall only increase this risk. It's not limited to China though, Japan has similar issues. As an example, until the advent of smartphones Japanese phonemakers were producing increasing amounts of esoteric features that only Japanese consumers wanted.
This would also apply to any App associated with Musk.
Walled gardens and trying to control and extract as much wealth-value for yourself, and lazily to maximize profits and reduce effort and intelligence-skill-sophistication required, goes contrary to nature and how tribes work - where adequately sharing of resources, and arguably distribution skillfully with purpose, is necessary for [social] cohesion.
Facebook was so successful solely because it piggybacked on the VC and advertising industrial complexes and was first-to-market; externalities wise though they weren't successful - Facebook and what Mark created and maintains has been net harmful to society, and arguably to a very severe degree; though he's not solely to blame, other systems and processes had to be corrupt, captured, in order for the scale of harm to be able to unfold, cascade.