One flaw in your very entertaining analysis is that you overlook the fact that, while Canon is highly profitable, Sony has been losing massive amounts of money:
http://www.wsj.com/articles/sony-posts-hefty-loss-for-july-september-1414736535
I will eagerly watch for pros shooting with Sony still cameras at future weddings I attend. I have never seen one yet.
Their A series never caught on, and features such as light weight and compactness that attract some amateurs such as myself to mirrorless don't attract pros. They want blazingly fast autofocus, a large lens selection, good battery life, and great flash capability. The A7RII is not likely to suit them.