I don't think Canon's failure to permit 3rd party lenses has hurt them much in 2022. Rather, it will hurt them over the next five years (unless they reverse their decision). Here is why. I'm a professional who has used Canon equipment for the past decade and am heavily invested in the RF system and am totally satisfied with their quality and performance. But because of their policy against 3rd party RF lenses, I have already begun recommending Sony to all those beginners who ask me for input, and it is the lack of 3rd party lenses that is the reason. So, in 2023, there will be 20-40 new users who I would have suggested start with Canon but who will instead be going with Sony. New users can be pretty enthusiastic about their new equipment and if they recommend to only two persons to go with Sony, and I continue influencing only two per year (major underestimate) that will make 60- 120 fewer Canon users after one year, 180-360 after two years, 540 to 1080 after three years, 1620 to 3240 after four years, and 4860 to 9720 after five. And this is only from just one professional photographer giving recommendations to all the beginners entering the market. If there are only 1,000 professionals who begin to recommend to those just starting out to go with a manufacturer that welcomes 3rd party lenses, that will make 50,000 to 100,000 less Canon users in five years and 50,000 to 100,000 more Sony users than otherwise - a market share difference of 100,000 to 200,000 units. And I think I'm being conservative. Worse still ... there is a tipping point where once the 'word on the street' is that there are excellent 3rd party lenses, except for Canon cameras, it becomes what they call 'common knowledge' and even if Canon reversed their decision in three year's time, it is awfully hard to overcome 'common knowledge' and other urban misconceptions. So if it were me, I'd permit 3rd party lenses with the long-term view in mind which translates into selling more cameras, as well as royalties from each 3rd party lens, not to mention still selling a ton of their own lenses simply because people often prefer the brand name lens.