I just did a search for a few FOX and Disney MOVIES and they are on Itunes, I guess you mean outside the U.SKarma for them removing all their Disney and Fox movies from iTunes (and Amazon Prime store, Youtube movies, etc.) from various countries to force people into subscribing to Disney Plus and inflate their numbers. Which always gave me vaguely racist vibes... but I could be wrong.
Strangely they did put the new Avatar movie on sale on iTunes... I wonder if they'll reverse their stance.