Mastodon seems like a better comparison. It has more than a dozen forks and clones, and plenty of donation income.

Is mastodon a good case study?, his 6M active user count , server count, and income from patreon seems on the decline , and this isn't a project that made a large dent in existing market share like wikipedia/firefox/blender, compared to twitter and facebook market share it is still less then 0.1 percent. and when compared to it lemmy is not as established with a income that is about enough for just one developer.

Sure it would be good to have more contributions in Lemmy, but as these projects are made by volunteers they will do what they are most interested in. Nothing we can do to change that. And if they add new features which prove useful, they can also be added to Lemmy.

Maybe, but i think the problem with lemmy is that feedback does not effect prioritization enough (that is the common criticism it seems, iirc one of the justifications for creating the new projects), peertube probably created ideas.peertube to prevent this problem, when i compare sublinks and piefed development statistics to lemmy (in term of contributions this month) it indicates they are already equivalent in term of development resources despite being much newer and not really usable. Better prioratization processes might encourage more people to contribute rather then go there own way.

I know planning and prioritizing is not a particularly appealing or enjoyable activity ,but 65% of businesses fail during the first 10 years , I imagine running a non profit competing with industry giants like meta and twitter and seasoned business men is going to be harder then managing the average business .