> ..and inspiring every studio to stop what they are doing and make something in that genre.

This. After Doom, there were maaany releases where a studio had X out there, and then released [3D version of X]. Or also throw themselves onto the fps genre. Almost to the point of killing innovation.

Don't get me wrong: that, and the 'infinite' storage of CD-ROMs got us many nice games.

But neither did much to sharpen game developer's creativity skills. Many "me too! (meh..)" releases in that era.