I don't understand the lemmy but it seems like a big problem with social media platforms are them seemingly acting as a natural monopoly.

Once people are on a specific platform and posting, then even if the platform falls behind or the individuals in power start acting in egregious ways the inertia is enough to keep them going for a very, very long time as the shock of leaving the platform costs an individual user far more than putting up with the stale progress and bad behavior.

Having the 'content' detached and free, accessible to all would seemingly solve this issue. AFAIK lemmy still keeps content proprietary? Just on a decentralized system. Maybe the next step is mandating module[?] transparency for incorporation into the federation.

Or I could be completely wrong and this already happens?

one of the reasons i dont use lemmy all the time tbh. i changed instances like 3 times cause of random disappearances and defederation. the mod situation is far worse here than on reddit because you have like 3 different groups of people who can remove your post.