Less than a year is not exactly the long run
On that point, Disney had 3 of the top 4 and 5 of the top 10 grossing films of 2022 if you count Spider-Man which was technically Sony. They may not have been animated films but why would that matter? People say they are done with Disney then drop $20 to see little blue men or a Superhero movie. As far as parks I’m not sure Universal’s success has much to do with people quitting Disney. As I said, it’s a nice story and people want to believe it, but doesn’t make it so.