My understanding of this from a few videos and articles is that Disney not only wanted 50% of the profits from every main Spider-man movie's box-office but they also wanted 50% of every Spider-man-related movie, such as Kraven the Hunter, Morbius, Venom, Spider-verse, etc etc.
Regardless if you want Spider-man to be supervised by Marvel and for him to stay in the MCU, you gotta admit that deal is insane. No sane company with the movie rights to Spider-man would EVER make that deal. I can't really defend Sony's movie quality but I can certainly understand why they would back out of the deal with Disney.







