Canon not only dominates the camera market, they continue to gain relative to all the other manufacturers, further increasing their dominance.
Before you start with the insults, here is my opinion.
I love my Canon kit, but I also like my Sony kit.
Sony has some things Canon does not, and Canon has some things Sony does not.
To say that Canon
Dominates the market, (and I know you're going to bring up their ILC sales, which includes all the DSLR bodies they still sell like the Txi series...etc,etc) is not a fair assessment as the future of photography technology is the mirrorless market and both Canon and Sony are pretty close to each other.
They are both market leaders and I think are both neck in neck right now in terms of body features and lens design.
One will release a new body this year, the other will release a body the year after. It is a competitive market with both leaders pushing each other at the moment. I love this competition because I am able to get some pretty awesome premium features that would have only been saved for a higher tier body in a lower more affordable body.
That being said, IF a professional who wants or needs a feature or lens now, they will not settle for less and will not be brand loyal and will purchase what they need. I am a prime example of this. I needed wide glass and went with the only other option I was able to purchase. I would prefer to stick to the RF line, I love my R6 and patiently waiting for an R5ii to come out to make the upgrade, but I am still waiting for a 35 1.2/1.4 and a 14 1.8 to replace my Sony GM's.
I was going to move my R6's to R5's as I am slowly consolidating everything to Canon, but since the R6ii's were released, I chose to wait for the R5ii, I would have loved to wait for the R1, but:
1: I have to wait until 2024, as of today my A1 is my prime work horse I use and it works amazing. By the time the R1 is released, there might be an A1ii which would be another deciding factor to contend with between the brand war.
2: I prefer a smaller more portable body and I can only assume the R1 is going to be a large gripped body.
A professional who makes money in this field can swap gear around and play with multiple systems. However, someone new or a hobbyist who has been waiting and waiting and waiting, might not be so loyal as to continue to wait.
Cannon will never die in doom, but one thing I have noticed is a lot of these youtubers are all running Sony gear. So as a new photographer, or videographer, guess what they might be enticed to purchase as their first system and grow with. The R5c is a perfect example of how it should be on the Netflix approved video list in order to compete with Sony's FX3. Just because the current generation is loyal to Canon because of their history, does not mean future generations will be.
The smartest thing I think Canon did was release the R6ii. It gave way to a ton of used R6's that are a cheaper viable option to push people to the Canon ecosystem. IF they do the R5ii in the spring, Another wave of used R5's will hit the market and push DSLR users to mirrorless and RF glass.
Canon has caught up with Sony's mirrorless market in many regards, but this lens thing is still a pain to deal with. What is interesting is the crazy sales on RF L glass right now. I sometimes wonder what the actual margins are on the manufacturing of the glass.