Which would be fine for systems with definite signs for improvement. Unfortunately, RPG's are subjective, as the only real result is in one's head. Some folks like faster combat, some folks like more comprehensive combat, others prefer storytelling. You can't create or evolve a perfect rp system.
WotC's decision to go to 4e was for sales, not for the improvement of the game.
ANyways, sorry for deviating on the topic. I don't think OGL has failed, but it has opened doors for competition that wizards doesn't want. So the GSL was created.