How many original rides were based off of Disney movies??? Almost all of them.
Quite the opposite.
The vast majority of rides at the Magic Kingdom weren't related to Disney movies. Only a handful in Fantasyland were associated with films. When Epcot opened there were no movie tie-ins anywhere. MGM is a natural exception because of the concept of the park, but only a small sampling of Disney movies were there. Animal Kingdom too was practically void of Disney film related attractions.
Back in the day Disney didn't depend on films to build attractions.