I don't think it's a matter of "Canon Abandons the Pros" as much as it is "Canon focuses where the profit is".
Obviously profit is vital, but I think Canon also targets what the market is asking for, at least in the professional arena.
There are a lot of photographers and no company can please everyone, though when you look at the whole line up, Canon comes the closest.
This forum is a home for measurebators that say a Nikon has 1.743% more DR or 10 more mpx or special lens coating sharpening, or a Sony has more mega something for 1/2 the price, but nobody covers all the basis from cinema 4k to sports cameras, to advertising cameras like Canon,
especially in one lens mount.Owning REDs, Pansonics, Sony (sold), Nikons (to be sold), Phase, Leicas all of them have a place, some are better in certain limited parameters, but I don't think I've shot a single project in in 10 years that a Canon case wasn't on set.
If anything Canon is conservative. For a company that brought in the first digital camera that worked with the ease of a film camera, the 1ds, Canon moves one slow step at a time and introduces their higher end models what seems to be a year too long, but the upside is their cameras are reliable, useable and well thought out.
Actually, in the last Photokina, no company really announced anything spectacular. Canon a better built apsc, Nikon a variant on a present camera, Pansonic, Olympus, Sony, RED had already produced the latest models months prior and Phase, Leaf, Hasselblad were virtually silent.
Even Leica has a camera you probably can't buy in a year, so nobody rocked the world.
Would I like more of everything, of course, but working professional versus photographing for the pure joy is a much different mindset.
If I have a project that requires 80mpx, 14 stops of dr (I don't) or 6k cinema (I do), then finding, buying, or renting is a very easy task.
I know few professionals that judge an image solely on 20% more detail, or dr.
Those are things that we learn to craft into a session rather than hope we can build it later or require a camera to capture perfect highlight to shadow in any light, any subject.
To me photography is art aided by science, not the other way around.
In fact when we talk image creation, the camera is important but far down the list of importance as long as it's reliable, functional and doesn't get in my way.
IMO
BC