I know some people swear they can never go back to anything less after watching one 4K show, but I, for one, have no problem watching lower-quality media when there's no convenient way to get a high-quality version.
Some of us lived through the RealPlayer era.
My DVD player requires a separate input on the TV, controller, and wall socket. The player needs to be physically accessible too, and you need to store physical discs.
Changing DVDs is significantly more involved than changing a movie on Netflix, and finding something that you know you have on DVD Vs on Netflix required someone else to have correctly put the disk away.
Lastly, those things are just noisy as hell.
And anyway, it’s not really competing with Netflix since I sort of gave up on Netflix because it didn’t reliably carry most of my favorite movies and tv shows. It’s a choice between loading a dvd or not being able to watch it, not between loading a dvd vs clicking on Netflix. I’m in Europe so the selection is even worse.