Popcorn cost basically nothing to make at home, especially if you buy the raw kernels and pop them yourself, and I can rent a 4k version of a movie for like three dollars on Amazon. My 85" 8k TV cost me $1200 (refurbished, but still). For the cost of going to the theater with my wife 15 times, I can buy that TV to watch movies but also use that same TV for many other things.
Even cheap shitty TVs are pretty ok nowadays, certainly better than the stuff when I was a kid, and after I have to question the point of going to an expensive physical theater where there's a risk of some teenagers talking over the movie and I can't pause if I need to use the bathroom. The theaters might not like it, but regardless of whether its fair, they are competing with TVs now.