I'm with Sony on this one. It makes no sense for them to give Disney 50% of the revenue when they can take their entire cast and go make their own Spiderverse that can directly challenge the MCU. Disney can stop being greedy and ask for a bump in the percentage (say 205) and expect a reasonable reply. No way they are getting 50%. Spiderman is hot right now, the rest of the MCU? Not so much.
Sony played this one right, they let Disney build the foundation but only allowed them to use some minor villains. The heavy hitters remain in play for a Sony Spiderverse, ie Norman Osborn, Wilson Fisk, Tom Hardy's Venom, Doc Ock. They also have Miles Morales, Gwen Stacy, Felicia Hardy, They can do like a 10 movie saga and make billions with no help from Disney at all.