I think if MMORPG's toned down the monster bashing a little bit they could really make a whole lot more money with the games than they already do. Or at least have some servers that will be like Oblivian and some servers that will have the traditional MMORPG style of play (where you have to fight and build your character up to get anywhere).

The only thing that a traditional MMORPG can bring you that a game like Oblivian can't is the ability to team up with other gamers (and to have playervsplayer). But I'm not sure if the majority of the people who play those games do that or if they just go the solo route.