Due to sales and distribution rights, you’ll find that there are shows and movies that you can get on DVD but not buy digitally. This isn’t an Apple TV problem - they’re simply not available for digital purchase.
As you might suspect, this mostly affects older media. For example, the first few seasons of Project Runway are only available on DVD.
At this point, though, I have to jump through so many hoops to watch physical media (hook up a computer, find and attach a drive for it, update the drivers or find a third party app for playback, etc) that it’s just not worth it.
So, for me, my answer if “yes.” I stopped using any physical media because it’s easier to just go digital. I decided that ease of use outweighed the tradeoffs, although there are some.