I think its got to do with the spectacle for most people. A drama, comedy, or thriller can still make the emotional connection on the small screen. But the large scale visuals of Dune, a Marvel Movie, or even Mortal Kombat are lost on the small screen. I think Dune is a great example, having watched it on the small screen the story was still good and worth watching, but the theatre experience really added a sense of scale to the movie for me that I missed at home.
I see it as a good thing, give me a premium experience about 3-4 times a year, then let me see everything else on the small screen. Reduced production budgets for smaller movies make it easier to green light something risky, higher ticket prices raise the yield and bar for things deserving of the big screen.