Small personal phone “dial in” servers might make a comeback. But cause and effect will kill that too, phone plans will change. No longer will “unlimited minutes” and “no long distance fees” be available. They will make it unaffordable to even do this.
They are backing us into a corner we cannot get out of.
When I hung out on underground BBS’ individual “servers’ consisted of 1 or 2 dozen 8086 or 286 desktops that were stripped of all but basics.
You dialed in locally. Correspondence across nodes in the network consisted of encrypted packet mail distributed at intervals via landline or internet.