Yeah, you're not very good at reading. What part of "thus losing money for the distributor, studio, and/or production company that invested in it" did you miss? Would "box office flop" even exist as a term if the box office was not the main source of revenue for films?

And since we're here, from where did you draw the impression that it was otherwise?

From a source that actually broke down revenue from movie releases between box office and home viewing, thus refuting your original argument?