PlayStation created the Industry, Xbox changed the playing field

[novasonic]

I'm assuming "the industry" means consoles with interchangeable games and we're ignoring plug n' play consoles..

Magnavox created the industry, Atari popularized it, Atari/Coleco/Mattel killed it, and Nintendo/Sega revived it. Everything after that was just additions to what Nintendo and Sega built. Sega was the first company committed to online in consoles and Xbox popularized it. Playstations were popular in a rapidly expanding market, but aside from that they contributed very little to the industry.