OpenGL 3.1

It's a real man's OpenGL. No cruft. No fluff. Just you and the shader units, locked in a battle for supremacy. People who can't write their own perspective projection matrices should just pick up their toys and go home.
John "Zed" Carmack wouldn't have wanted to be mollycoddled by DirectX and the likes, and neither should you.

ARB_compatibility - you just sure got told. Also, what's with the development slowness? MS goes much faster and has been eating the marketshare at the speed of light.

AFAICT Direct3D itself is not "patented"/protected in the sense that it's just an API, maybe the others should just copy it. Heck, if you use the same driver ABI, the drivers are already written.

Problem solved.

(Of course OSS fanatics will never allow this since "M$ would have won" - enjoy your 1% marketshare)