Miles Morales. Gwen Stacey. Ben Reilly. Cindy Moon.
There. Four characters, who are Peter Parker in all but name; four characters whose rights and usage are, presumably, bundled in with the rights Sony bought back in the 90's. Heck, two of those names have already appeared in quite-possibly-the-best Spider-Man movie ever.
Why doesn't Sony just... use one of those instead?
I mean, at this point, it's clear fans want Peter in the MCU; the backlash made that clear enough. While I do think that the leaks about Disney's offer to Sony is insulting (seriously, you guys already have all the merchandising, you don't need 50% of the profits)... I don't know if I see Spider-Man: Home and Away making that much money, or acclaim, is it proceeds as is. The sheer vitriol being thrown at Sony, and the fact it would be existing over the broken body of MCU!Spider-Man seems like a good way to sour the well.