The main issue with other platforms is that the content that exists within are too wild-west. Anime isn't a everybody thing nor are geeky Programming/Linux communities or furry artwork for that matter.

Where do I find TikTok content within Matrix? That's what the current content-matter is.

The corporate apply heavy exploitation; psychology and social exploits to the user. And while the other platforms don't and carry merits such as privacy and the likes; people really just don't care they are being used for systematic learning, being manipulated because some peer is influencing them.

Companies pay large amount of money in R&D for developing social exploits, all the way down to the background colour of the icon of the app. A platform has to have a gimmick to catch. Privacy, decentralized isn't it.

These foundations don't have corp money to pay for content producers, influencers and so you then end up with dwellings of niches which can turn urk at best.