As you say, Walmart now sells 100" 4k TV's with HDR for less than the average persons tax return. They often have them in-stock in the store.

Meanwhile most theaters are 2k, lack dolby vision or other HDR, have worse audio (many can't do Dolby Atmos with proper height channels), and are filled with people using their cell phones through the entire film.

Cinema is either dead, or on life support.