I just recently lost access to my main pc so I currently cannot play FFXIV. But I could play if FFXIV was on a service like Onlive. Heck I could even play on my small netbook (and eventually my tablet) if I wanted to.

Anyways... It would give a lot more people access to the game that do not have the hardware to run it. I don't know anything about the technical details involved with having a game moved to a service like Onlive, but I know I would love to have that as an option.