On Encanto- how can you be sure? It's already not nearly as popular as it was when it came out, Moana and Frozen have proven to be much more popular. You got me there with Cars, though with it already being 20, who's to say it'll last another 20? Think of how many highly popular Disney franchises dropped off after a few decades. Pooh isn't nearly as popular as it once was, Jungle Book, 101 Dalmatians, etc etc... even Toy Story is starting to become unpopular in the public eye after Lightyear bombed and Toy Story 5 was announced to nearly entirely negative response.
I think there's a place for "newer" IP, but they should really see if they're able to stand the test of time. How well Moana 2 does will probably dictate if that Moana ride is ever built.