It would be part of the MCU, so they’d drag out a Sony exec and make a joint announcement. It would be good PR for both, especially if they got Tom Holland and RDJ on stage to act like they were responsible. The crowd would go nuts, social media would go nuts, and the news sites would go nuts.Spider-Man is a film project, but it is not a Disney film project.
People can keep holding out hope it they want, but it's a very feeble venture at this point, IMO.
Plus there are rumors that a deal was made for a seven picture deal, giving Sony live-action television rights, making Spidey part of future Avengers teams, and bringing Venom into the MCU. Sony would get a 70/30 split of the profits and Marvel Studios would co-finance 50/50.