Cosmos’s lemmy app is outdated and doesn’t work, yunohost is the only webclient type thing I’ve tried that has lemmy and works. Yunohost also has most other services like sharkey, pleroma, peertube, etc. and lets you easily install multiple services on one server with different domains. Only downside is it doesn’t have multiserver management like the rest, but the rest have no app support for fediverse stuff outside of mastodon.
If you don’t know how to do a lot of the docker stuff yourself, coolify, dokploy, runtipi, etc. aren’t really a possibility, they don’t work with ansibile, or the easy install without modifications (that idk how to do, I have yet to suceed)
Corporations might accidentally help if they try to make their own instancss, like if you sign up with google to join the fediverse, realize most instances block googles because its corporate, then they make an account at non corporate version.
I think the best way for it to grow would be making it easy to self host, yunohost maes it pretty easy, but more managed hosting options competing or more of the big ones offering it would go a long way.