Sony gave Marvel the merchandise rights to Spidey. Plus Sony works with Marvel so that they don't conflict in movie dates.I was under the impression that Disney/Marvel is not on good terms with Sony what with Sony pictures renewing the Spiderman movie contract and attempting to make a "cinematic universe" out of that rather than allow Disney to fold Spiderman into the Marvel Cinematic Universe...
Sony Pictures still holding the rights to Spiderman's film career for the time being instead of rightfully under Disney control...Amazing Spiderman 2 was awful.