I think Sony dabbles a lot with creative bodies because they started out making video bodies, and then purchased a ready made mount system for still shots, so they're doing what they always do - putting their history and tech into the still bodies the same way they always have.
Canon on the other hand doesn't have the video background, theirs have always been still. Yes, their bodies are more and more able to be used as a cinematic camera, but you can't fault them for being behind sony in that regard.
I dislike Sony predominantly because they adapted the konica minolta mount primarily as an 'in' to the industry. They snapped it up right as KM fell off the wagon, so all of the previous KM users went to Sony because their lenses fit.
Problem is - all the KM lenses were film ratio, so for the first (almost) decade of the Alpha mount system's life, most enthusiasts got suckered into buying it to keep their lenses, but the lenses were never meant to be used on a digital sensor, so the aberrations were terrible.
Canon developed EF-S when they released digital SLRs, so their glass grew with it. Alpha lenses had some catching up to do, although they have now achieved it, I still despise them as a photographic company. (When it comes to audio and video however they are exceptional. I still to this day use Sony Vegas - although that too was an aquisition of another company's tech when it folded)