Using phones isn’ta good analogy for me, I don’t care about who makes the insides of my phone. My phones in my household, which I manage, are just communications devices first and foremost, for my wife and kids. I go for the best value phone for each, so we have had probably 5 different brands in the past. They get replaced about every two years as well, furthering my lack of interest of the innards.
My cameras and my expectations of them are very wildly different. My use of them, the results I get and share and sell, are very different than a device I talk with, text on, use a browser or apps, etc.
If the sensor was Sony in all my camera gear, I would really consider switching. There wouldn’t be anything at that point that canon would be offering me for the one task of photography. Cost certainly wouldn’t be a consideration, image IQ wouldn’t be a consideration, etc. the only hold up for me would be ergonomics then.
TVs again, are much like phones for us. I would go for the value option vs image, so with the six different devices in our house for TV, all of them are different brands. We have benq, sony, samsung, toshiba, and Emerson, and some no name unit. I don’t use TVs to produce something I share for free or profit, it is just a device that I use to consume media rather than produce.
I have a pretty good feeling that you and I don’t view photography the same way either, if you consider phone and TV in the same classification as camera needs. 