Every GTA main game has been released on the PC. The series began its life on the PC.
It really upsets me to see the whole series is not on PC, though. Primarily the Stories games, as Vice City Stories has a far more fleshed out game world than Vice City. The same especially goes with Liberty City Stories compared to III. Bonus points for them both having fully functional cameras, too.
I can understand Chinatown Wars as the scope and scale of the game clearly was designed for portable play, but both Stories titles were more of getting a console experience on a handheld, which I felt was accomplished.