Don't forget that OpenGL isn't just for gaming. What about 3d packages such as Softimage and Max?
It's also available for most major operating systems. I bet you wouldn't see Maya on SGI, Windows, Mac and Linux if each platform had a different graphics language.
Last time I used 3D studio max with Direct 3d it wasn't a pleasent experience. Flakey inconsistent display. Much more useable with OpenGL.
OpenGL has been available for PS2 for some time. I remember reading about it on Gamasutra regarding a Rayman game.
Don't forget that OpenGL isn't just for gaming. What about 3d packages such as Softimage and Max? It's also available for most major operating systems. I bet you wouldn't see Maya on SGI, Windows, Mac and Linux if each platform had a different graphics language. Last time I used 3D studio max with Direct 3d it wasn't a pleasent experience. Flakey inconsistent display. Much more useable with OpenGL.