Everything I have read is that Nintendo essentially killed Sega's Master System and Atari's 7800 by use of their tight non-compete clauses for devs and publishers. So this got me wondering: When did Nintendo's infamous contracts cease their strangling effect upon the competition? Look at Sega and the Genesis system and they had 3rd parties like Acclaim and Capcom on board even as those companies released titles for the NES. Hudson had their own system, the PC Engine, even as they released titles on NES. By the time PSX came along, it seemed that 3rd party developers freely roamed from console to console. So when did Nintendo's official stranglehold on 8/16-bit devs/publishers come to an end?