User blog comment:Jimeee/Bethesda Games Studios: "Moving to our next adventure"/@comment-74.186.125.13-20130509013112/@comment-3124449-20130509034025

In ESO, the four sections of Tamriel are separated. Arena was basically a giant flat surface with nothing happening except a few small things near you. Modern PCs and consoles would not be able to handle a game with as much activity as Skyrim on that scale. However, the problem is not just hardware limitations - it's also marketing. If they gave us all of Tamriel in one game, people would be much less likely to buy the next game.