I'm new here but if I stick around long enough I'll probably get up my own server/instance(s) for the various parts of the fediverse I participle in. Mostly because it sounds neat and partially because it would allow other people I know to have a fediverse "home" operated by a familiar face (if the fediverse gets popular among the mainstream).
Right now it's just Lemmy, but I may eventually participate in Mastodon, Matrix, Peertube, Owncast and.
I'm going to wait first though to see if the Lemmy userbase (and platform) remains healthy and/or grows. Then would come the hard part of setup, I'm familiar with technology, but nowhere near a professional or a hobbyist (unless you count gaming).