Quote Originally Posted by Fast Glass View Post

Canon and Nikon were the only two real top dogs and were comfortable not investing heavily into mirrorless at all and with them being set in their ways in other ways no reason to believe otherwise.
This part I do not agree with. It is like saying that Canon waited till the twenty teens to start researching mirrorless.
Canon released the 20Da that could be shot in live view in 2005. Live view uses no mirror, it locks it up. It takes research for this, and I am sure Canon had an overall game plan.