No. If you're talking about the Paramount decree, it only prohibited specific companies from owning theaters. Smaller exhibitor at the time, including Disney, were excluded. And some already did or do own theaters anyways (Disney, fo course. Universal did for a period). But even if the decree is relaxed, certain things, such as block booking (where in order to get film A you must book films B and C) and set clearence (such as when studios collaberate to schedule films) will not be allowed. Blind bidding has been allowed (where the theaters bid to open a film, before seeing any of it, by posting a minumum amount) but only once a film has been complete. (Due to opening in a large number of theaters, this is rarely used. But I remember when "The Empire Strikes Back" opened in Florida, for example, a theater had to put $1,000,000 upfront, guarentee a minimum of 8 weeks, and have a 70mm projection system. This gave exclusive to the theatre for 4 weeks. As a result TESB opened in just 3 theaters in Florida - one in Orlando, and two in Miami)