Why is it cheaper to film a movie out of sequence?

You could stock on video back in the sixties too. Hitchcock could have filmed “The rope” on video back then in one film-long take (back at the time, as I said, there were whole live -no single break- theatre adaptations, hours long, with camera moving inside the sets, like it would do in a traditional movie. Basically, the set-up of “The rope”). Of course video was awfully shitty at the time, in terms of image quality.