What can people do when they have achieved everything?

[Sevenless]

I think it's worth noting: Many of these people don't stay entertained and move to play other games while waiting for a new world.

[yym331]

If they were to run PVP they would slaughter the weaker players
Ultima Online developer Richard Garriott de Cayeux created an ecosystem in the game, but it was not possible to create it as intended because players were slaughtering more than expected.