>Until more people are playing triple A games on platforms that use OpenGL you can't really fault them for spending money when it doesn't make sense.
All platforms support OpenGL, not sure where you're getting at.
All platforms support OpenGL, not sure where you're getting at.
Like it or not, neither of those are true. It might be nice if they were.
OpenGL is obviously still a widely-supported choice on desktop PCs (and mobiles), so that's not in question.