[Nextgrid]

Making it free for non-commercial (personal) use but charging for commercial (brands, businesses, etc) accounts and using that to subsidize the free users. Businesses also get more features such as analytics, their phone contact details prominently displayed on their profile, etc.

Sensible limits on what users can do. New accounts can't immediately upload media or post links and have to gain trust over time to try and limit spam.

Better moderation, not just for obviously illegal content but anything that's predatory such as multi-level marketing schemes, quack "alternative medicine", anti-vax and similar crap. Anyone posting or promoting this kind of content gets the boot after a few warnings.