I routinely rent movies on Vudu...even though I have about a dozen or more places I can rent from. Why? Because their "HDX" streaming is ALMOST indistinguishable from Bluray. You can still see some compression, but it looks WAY better than Netflix, Amazon, HBO Go, or Google Play!
I still buy my movies on Bluray...though I am buying less and less of these. When I OWN a movie, I want to PHYSICALLY own a copy, that I can play at anytime, online or offline...whether the movie studio or the streaming company is still in existence or not! I DO appreciate Disney's approach...buy the Bluray, get a code that will link your purchase to whatever streaming service you like...quick and easy (once you set up your initial account anyway).