It would have to be slightly fixed so it would work with whatever console/handheld it got put on, but that would be much better than having to completely retool the game for touch screen capability.
Notice how I also said PSN. Anyway, I never said it wasn't popular, I just said mobile phone gaming in the states isn't nearly as popular as it is in Japan. And besides, putting it on the iPhone would alienate a lot of players for many reasons. Such as:
-The price of it
-The fact that not every has one & I doubt they'll go buy the iPhone just for one game and not to mention they'd probably end up spending more on it on the iPhone than they would on any other actual gaming system/handheld.
-Don't more people have PSP's/PS3's/Wii's than iPhones?
-They'd have to completely rework the controls in the game and take up more time than necessary