Grand Theft Auto was never a Sony exclusive game, it was originally "STOLEN" (as you put it) from the Commodore Amiga computer....... GET YOUR FACTS RIGHT BEFORE POSTING POINTLESS AND WRONG TOPICS
http://www.gamesradar.com/f/the-complete-history-of-grand-theft-auto/a-2008042314506193050
The M-rated/18-certificate gameplay of GTA IV is the pinnacle of an eleven-entry series that began life in 1996 on the Commodore Amiga. As the Amiga grew old and technologically infirm, GTA’s creator, DMA Design, switched the development of the original game to the PC. Grand Theft Auto eventually hit the PSone in 1998