The pro DSLR market has been pretty stagnant in the past few years in the traditional Nikon vs Canon space. Very marginal improvements from generation to genera

The pro DSLR market has been pretty stagnant in the past few years in the traditional Nikon vs Canon space. Very marginal improvements from generation to generation, mostly small incremental iterations on already existing functionality. Sony is doing some interesting work with the mirrorless stuff, so maybe that will go somewhere. Wonder why we're not seeing more competition in this space. Major players too entrenched already and not enough money for others to try to break in?