What is ground-breaking about a Sony?
Is it ergonomics, color rendition, water leaking?
Yes, some specs are impressive, but they have an advance of a few Milc generations on Nikon and Canon.
I'm certain the next Canon "mirrorlesses" will be very convincing cameras.
Your post starts out by asking what's so great about Sony, and then immediately pivots over to admitting Sony is good, but making excuses about why Canon isn't as good.
The A9 can do 20fps with continuous autofocus and absolutely no blacking out or juddering in the EVF. The EOS R isn't even close. And yes I'm comparing the A9 to the R. The R is the best Canon currently has to offer, I don't care that it's cheaper than the A9. It's the best Canon currently has to offer us. I'd pay more for a better Canon mirrorless, but currently I can't.
Sony also has far more advanced autofocus technology than the Canon, even including face detection for animals at this point. Again, Canon does not have that, and it's widely held that the face/eye detect Canon does have isn't on the level of Sony.
Sony has pixel shift, giving you the possibility of effectively having photos of hundreds of megapixels when you're doing landscape or other still subject work. Canon has nothing like this.
Sony has had IBIS for a long time, which isn't really groundbreaking at this point, yet Canon is still lagging behind.
Listen, if you can't admit that technologically and feature-wise Sony is ahead of Canon, you're just playing yourself.
This doesn't mean that Canon makes a bad camera, or that it's even worse than Sony. I owned an A7 III for a little while. It had a lot of nice features, but I couldn't stand the menus, the way it felt in my hand, and the way it focused in very low light. I got rid of it, because at the end of the day it just wasn't a very good or efficient camera for me to use. I was missing shots because I was fumbling with the camera and/or it wouldn't grab focus in low light. So ultimately, Canon still makes a
good camera. It doesn't have the features of the Sony, but its basic form and function is much better.
I truly don't understand this rabid defense of Canon in light of the fact that they lack the features and technology of Sony. Who cares? Just let Sony be ahead. Don't make a fool of yourself trying to say that Sony doesn't have any better features than Canon. Even if they do, it doesn't mean your Canon is any worse of a camera. In fact it does a lot of the basics better and more efficiently than Sony. And hopefully Sony will continue to push Canon to be better.