Once Pixar and the presumed Eastern Gateway are built, I'll be interested to see how the increase in supply affects the daily parking rates, and their rate of increase.Remember that Disneyland is fairly easy to get to without you driving there. Both LA and Riverside County have good limited stop bus service. OCTA has multiple routes including the faster Bravo service. ART also has 23 routes to Disneyland. Metrolink and AMTRAK trains service the area. And of course Uber/Lyft and taxis. Friends can drop you off at both Harbor and DTD.
You don't have to park at a Disney owned lot, in fact I strongly suggest you don't park at Disney this summer.
It's already close to a wash between parking and Ubering for a lot of folks, and that radius expands every time the price goes up.