I still have my Sony SLT-A99 full-frame digital camera.
The other reason I switched from Canon, was to use the easy live-view aspect of the Sony cameras. After several years of using the cameras, I found that my desire to use live-view has not been as strong as I once thought. I now realize that I really don't use it as much as I thought I would. The battery life on my Sony (at least partly due to live-view)is not great. I travel with five charged batteries!
In 2018 I purchased a Nikon ASP-C sensor camera (the D7100) because I like the crop sensor for wildlife photography. I sold my crop sensor Sony because the Nikon cameras just seemed better in APS-C. I liked the functionality and image quality of the Nikon so much, I decided to look at a Nikon full-frame camera.
The intersection!
The Nikon defaults to viewfinder mode and has incredible battery life. It also has a very easy to use button on the outside rear of the camera to quickly switch to live-view (something the Canon cameras I used did not have). With Canon, I was forced to go into the menu system to select live-view.
The Nikon allows me to switch between the two modes easily with the touch of a button.
Another great thing about the Sony cameras; they are among the smallest, lightest full-frame cameras out there. However, I find that the Nikon D610 and D750 cameras are still small and light enough to feel like an APS-C digital SLR and the grip on the Nikon cameras is very nice. The buttons and wheels on the Nikon cameras are easy to use.
I know many photographers are moving toward the Sony cameras. Some like the Fuji cameras (I have never used one, so can make no comment about them). I know these two companies are making great strides in the business of camera development. They are receiving much attention.
I also know that when I meet other photographers, many still use Nikon cameras. There are reasons why Nikon has been (and still is) one of the leading camera manufacturers and I am discovering the joys of Nikon.
Years ago, I owned a Nikon film camera that was one of the best and one of the heaviest camera systems I have ever used. Then, that was the reason I moved to Canon and stayed with Canon for many years.
But today, for me, Nikon is leading the way.