If it makes money, they will come.
With social sites, money comes from ads, and ads work better served to tons of people. So, if they see millions of people active (anywhere on the internet, not just fediverse), some marketing piece of shit will deem it an “untapped market” and it will begin.
Thing is though, servers are not run by corporations (they could be, of course), so maybe it will be different. But be honest, if you ran a very popular server for free, and someone offered you $2M a year to run some ads… you’re doing it. This is inevitable given growth.
Maybe everyone will be comfortable with server hopping anyway and it won’t be like it is with Reddit. Idk just having fun for now, actually posting on something for the first time in years because it’s small enough that real people actually talk back hah, riding that as long as I can