Many of those games lose a great deal of interactivity and control when ported to a touch only interface though. Turn based games like Final Fantasy fair well though on touch interface, but real time games like GTA not as much. I wouldn't call games like GTA III casual on mobile, but I don't think they quite appeal to the exact same audience they did on consoles or PC.
GTA III and Vice City are actually surprisingly good on mobile. I bought GTA III on a whim when I got my Nexus 7 last year with the Play store credit that came with it, and I actually loved it. It took me probably 20 minutes to get a feel for the controls and ended up playing the game all the way through after a while (halfway through Vice City now). Rockstar really nailed the controls for the touch interface, at least on a tablet.
This is really bad news for latin american developers, as far as I know, Argentina was one of the few latin american countries that were able to sell in the Play Store and now it's gone. It kind of kills my hope that they may eventually give support to my country.
I know I can establish an LLC in US to fix this, but it is something that we would rather not to do. It is kind of a bummer that Google makes it so difficult to do business in certain countries.