I mean, ultimately the answer there is... pay someone to run your open source server for you. But since the OSI hates SSPL and the like, the actual open source

I mean, ultimately the answer there is... pay someone to run your open source server for you. But since the OSI hates SSPL and the like, the actual open source developers are disadvantaged in running such a service compared to someone who just downloads it and hosts it. A huge issue is that the gatekeepers of "open source" don't believe making it financially viable is something they need to address. So it's gonna end up being the best we can do in our spare time for the love of progress.