I feel the Golden Age of gaming can only exist if their is a clear and defacto market leader.

The fact that this generation there wasn't, it really almost put video games entirely out of business. As well as basically killed inovation. Wii may be 20million ahead of the other two but that is a small lead when you think that the PS2 was more than double it's nearest competitor, as was the DS.
With 3 consoles really about equal in userbase, developers were forced(or duped) into making most games Multiplatform. The costly necessity of making every game across a plethera of architectures sent the price of each game through the roof. Some games just cannot exist in this world because they are not widely marketable enough to be published multiplat. Games started to all look alike as they try to capitalize on whatever game was doing the best (COD and AC). Everyone knows an exclusive usually experiments a lot more with new ideas than a Multiplat game. Exclusives should return if their is a sizable lead like previous gens, and thats for both systems. Some exclusives will exist because devs can reach a decent enough userbase without spreading their game so thin cuz of multidevelopment with the Market Leader(Final Fantasy), and the runner ups will recieve exclusives that can more easily make a name for themselves without the crowding (Ninja Gaiden on Xbox and Jade Empire come to mind)
I can't be the only one that believes gaming was better when most games were exclusive to one platform or another rather then focus tested towards what is most popular at the time. A market leader emerging will bring Exclusives back.