I have an analogy for all this situation of cameras: which is the best selling car in the world? which cheap Indian car company got land rover? the pros who use Canon for years will not change, but their children will not use Canon.
It is not the D5 or the 1DX that determines the direction of sales, but the opposite: we all start from the bottom, buying cameras that cost a thousand dollars at most. Who is innovating in cameras up to 2000 dollars? Sony is paving the way for the future, the result will come in a few years.