http://www.canonrumors.com/2014/08/canon-doing-market-research-on-medium-format/Wow neuro this makes you look even dumber. It's a rumor at best, canon hasn't said anything, and why would they enter a market where Leica said there is no sales beyond 6000 units? Oh that's right because they know Leica is full of it and will research it anyway.
Of course, Canon isn't Hasselblad or Phase One, so like Leica, Canon's market research can't possibly be accurate.
Canon didn't take Leicas word for it, because they aren't as dumb as you to keep quoting them. They also aren't saying pretentiously about a number because phase1 and Hasselblad aren't just going to give them exact sales figures.
I'm guessing its probably less "mistrusting Leica" and more looking into what kind of market could be created with a system that potentially offers improved functionality and/or a lower price than existing MF.
At present you sacrifice quite a lot of functionality going MF relative to Canon and Nikons best 35mm DSLR's, I remember talking to my second cousin who shoots a lot of pro travel photography and he ultimately sold his Hassleblad system and went with a 1DX for that reason.