The problem is, there's simply not enough raindrops to cause a flood. Or rather, there IS a flood, and it's sweeping right through Disney's front gates and into their coffers. Too many people are reporting positive experiences. Too many people are either pro-change or neutral towards it. And everyone else just keeps stampeding into the parks, with no idea anything's changed at all.
The only way anyone could bring Disney to its knees and force change, would be to fire up a grassroots boycott and get hundreds of thousands of guests on board.
The religious right tried that, and it didn't work. They were too few.
Besides, even if someone could, would they
really want to organize a campaign to damage the entire company over
this issue? Because that is exactly what would be required. Damage. Disney would have to take a serious hit to their bottom line, in order to find themselves in a place where they would be forced to consider a complete change of course where FP+ and
MDE are concerned.
And that kind of "success" might have consequences far worse than "I can't pull six Soarin' fastpasses in a day!". Consequences such as the company pulling back from investment in the parks. Cancellation of projects. Layoffs. Fewer refurbishments.
Mind you, that won't happen.

Because all we have here is a light sprinkling of a few dissatisfied raindrops, and Disney's betting the weather will clear once everything's in place and everyone's had a chance to get used to it.
Based on postings from recent visitors, the longterm forecast already seems headed that way.