I'm not sure how you can blame the Playstation when Commodore folded before it was even released.
Many people upgraded their computers to play the PC games of the time such as Doom or Jazz Jackrabbit. In the Amiga world, for some reason games were always coded for the 1mb A500 with no hard drive. Simply laughable compared to the PC specifications of the time.
The Amiga was stuck in the past. People were unwilling to upgrade, and games companies were unwilling to release anything which actually required a decent machine.