Yes. When they bought George Lucas's company, that included Lucas Arts as well, along with all of their original franchises. That includes the rights to Monkey Island, Maniac Mansion, Zak McKracken, Loom, Full Throttle, The Dig, Grim Fandango, probably even Zombies ate my Neighbors, and other things too. They do not own Sam & Max however, which is property of its original creator Steve Purcell, who is now an employee at Telltale Games. But they do own the rights to Sam & Max: Hit the Road, which is why this game has never seen a re-release from Telltale. Disney also owns the rights to Indiana Jones, the characters but not the movie rights. So they could re-release Fate of Atlantis as well, but probably not The Last Crusade, as it is based on the movie. Universal owns the movie rights to the Indiana Jones movies.
They definitely didn't throw these properties out as there are still money to be made in them.
The only reason why Grim Fandango is getting a remastering, is because Disney granted Tim Schafer and DoubleFine a chance to remake it.
Thanks for the info
Contracts and Licensing interests me. I wonder what Disney got / get out of the Grim Fandango deal