People who never gamed prior to directx will probably never understand why the death of OpenGL as a solution developers used is such a tragedy. Directx was mainly used imo to kill off OpenGL developments which could be easily ported across to Apple PC's.
I get fed up of reading a lot of hate towards Microsoft monopolies but this is one of the few instances where they genuinely killed off opposition. When it comes to internet browsers the consumer still has a choice, this is different as its a clear cut case of choice being removed from the consumers hand due to developments happening behind the scenes that the consumer cannot effect.