Exactly.
It's similar to the video game crash in '83 (although not as drastic). Hate Disney all you want, but their billion dollar box office films are putting paying customers in seats, something theaters have been struggling to do for several years now.
If a particular theater chain doesn't like it, they can just not carry Disney movies. Let them see how mean seats they can fill with Shazam! and John Wick 3 (which has done fairly well, all things considered).
Disney doesn't need theaters.