There's got to be a good chance they'll do a Spidey movie, a Venom crossover and another cameo or two, and then do a Marvel deal...Without Feige, Sony can do something that fans have been wanting, which is to team up Tom Holland's Spidey with Tom Hardy's Venom.
They can also cross the character over with their other planned spinoffs as well, while also continuing from where Far From Home left off with Peter's secret identity having been exposed.
Sony doesn't need Feige, Marvel Studios, and the MCU to keep Spider-Man viable as a property, even if they never have another billion-dollar film featuring the character.