I own many shares in Disney. Disney is multi-billion dollar company with many divisions. The Parks and Resorts division is only one piece, the poor performance of which can be set off by other divisions. I am not saying that P and R is losing money, but it is ridiculous to tie Disney share price performance solely to decisions made relating to the parks.
If Disney spends major capital on the parks for long term investment, the short term gains that investors and executives love (in the form of bonuses) might be threatened, but in the long term, would generate buzz, crowds, media attention, which translates to $$$$. That used to be the corporate model for public companies (and still is for some). Unfortunately, Wall Street analysts, greedy management, and demand for immediate returns seem to rule, until things get so bad that something has to be done. That is exactly what happened at DCA, and that is what is happening at some of the parks at WDW.
And do you really think it's the most magical place on earth? Great marketing slogan, but really, people should broaden their horizons a bit.