People will do this, for a while, haphazardly, as a hobby. A business operates reliably and has a service that is widely-available, like the wine relay, cloudfodder, or nostr.build. 

That is really tricky, on Nostr, unless you get big grants, at least, at first. The grant-funded freeware can always undercut the competition. They don't have to be better, so long as they are for free.

But this means that the grant-givers get to decide which businesses there will be, and which ones there will not be.