[mc808]

An MMO server could be set up in 50 years with bots taking the place of most of the players to a mostly convincing degree, although I think the knowledge that those are just bots and not real players would be just as unsatisfying then as it is today. If AI advances well enough, the bot-players could provide the drama elements and story lines currently created by players, but then we're basically looking at a derivative work instead of preserving the original work.