If the 3rd Spider-Man movie with Tom Holland and Disney will be the last, then it will be the last. Sony still owns the film/distribution rights to Spider-Man so people can expect the partnership will not last forever. On an unrelated note, there's still a rumor going around that either Apple or Netflix will pony up the cash into buying Sony Pictures. I wonder to the extent that is true, considering Sony has no plans to put its streaming service like the other four major studios are doing now.