I don't know if people have patience to sit through 3h10m - even if visuals are stunning.  Peoples attention span is very different from what it was 13 years ago.  One can easily guess story in these tent pole movies - it's all about visual story telling and woo the audience with technical marvels. First Avatar - everything is new - pandora is new etc...story took a backseat and frankly people were looking at visuals. There is no 4K or big screens at home and there is nothing like it.