Quoted from Utesichiban:I doubt they could make enough money after the huge licensing fee a Disney would charge to remake IJ. It was Lucasfilms back when IJ was made. Disney is a different animal and getting all the actors permission along with the necessary music is a long shot at best.
Unlikely Disney would need to get the actor's permission, except MAYBE Harrison Ford. Talent deals prior to the 21st century were a lot different and often included likeness for promotion, merchandising, etc.