@evan city loyalty came pretty high, given fedizens are actually quite proud of their delocalized communities
One of the million ways the fediverse could develop further is every city website upgrades into an instance and locals get an account (if they want 🙈). Technically and economically seems feasible, whether it would be popular and active I have no idea. Occasionally I do hear of proprietary neighborhood oriented platforms, but the only one that made it big in this space was Whatsapp.