[minimaxir]

MMO servers splits were due to capacity (both for the server and the player's weak GPUs trying to render players in a crowded area), not due to community. Modern World of Warcraft, for example, has removed almost every server-specific barrier and has strongly benefitted from it.

[Everdred2dx]

I think what OP is suggesting is that this technical barrier artificial as it may have been helped foster community. I feel the same way as them!