Lock-in is definitely a big concern, but the article vastly overstates the cross-platform benefits of OpenGL. Different platforms have different capabilities a

Lock-in is definitely a big concern, but the article vastly overstates the cross-platform benefits of OpenGL. Different platforms have different capabilities and limitations, and most of the work in creating high-performance 3D software involves optimizing for specific hardware. For example, porting an OpenGL-based game from Windows to the PS3 would not be significantly easier than porting a D3D-based X-Box game.