Isn't that one of those movies where the home version preserves the IMAX experience of variable aspect ratios? In that case, I would guess the cropping is anything *but* arbitrary. Films have been reframed in post-production since the beginning of time.
I think the filmmakers should choose whatever ratio they want, regardless of where the film ends up showing. The composition within the frame is what's important, not unused screen real estate. Did people object to The Lighthouse being in black & white and Movietone ratio? (I hated the movie, so...
I would have no problem if they made 2.40:1 screens standard. But we're a tiny community and most "normal" people would object to pillarboxing on 80% of their TV programs.
I've used black masking for 20 years on my projection systems. Since I don't switch from one movie to another without...