I have many companies that are my customers.. they opted to use OpenGL... for 3D material, since they can sell to governments and input into open platforms... but Directx has free frameworks that are more eazy to start with... no to finish... but at least start... so.. I would like to say, OpenGL still the future, DirectX does not deliver a solution to all platforms...
Good thread!
PSN: franco-br
MGS4, GH, MW2, GT5p, WipeoutHD, etc..etc..