Nonsense 
Count the camera models and then rethink "overcrowded"... and from the L-mount alliance there's still the first model to hit the shelves. So don't count non-existing choices in.
And also, don't forget Sony's APS-C attempts.
Given the small differences in size and costs, I really want to know why going on with APS-C. Each FF can do it as well, if it's only the crop factor.
Count the camera models and then rethink "overcrowded"... and from the L-mount alliance there's still the first model to hit the shelves. So don't count non-existing choices in.
And also, don't forget Sony's APS-C attempts.
Given the small differences in size and costs, I really want to know why going on with APS-C. Each FF can do it as well, if it's only the crop factor.