When Kubrick started shooting his films 1.33:1 it was in direct response to how movies were being modified to fit television screens. He shot his films a certain way and why should he have his films ruined by some techie in a booth? No movies were being shown on television in their proper aspect ratios in the 60s, 70s and early 80s, or during the boom of home video. If I’m not mistaken Janus Films and the Criterion Collection were the first groups to showcase films in their proper aspect ratios and the response to it grew and grew. However, regardless of letterbox/widescreen versions being available, the majority of television channels will air standard versions of films, even now. Shooting his films 1.33:1 negates any of his films, from about A CLOCKWORK ORANGE on, to have to be modified in any way.