Disney makes changes for a reason (usually monetary or guest complaints). Look at the old Fastpass System. Doing Fastpasses forced you to go into the stores, restaurants, and less popular attractions. This is why I always thought that Animal Kingdom was set up perfectly for this system. You could get a fastpass and then go on the trails or shop in the stores.
Is there a scenario where Disney makes more money using the Fastpass+? I would think that park hoppers might plummet.
Or is this an issue with guest complaints? Is it so bad that they saw a rise in complaints and a dip in revenue? Personally, I do not see how this new system is going to handle any of those problems since I would think all the good fastpass+ will be taken by the resort guests.
So what do you believe is Disney's motive?
While I think Disney can do more to encourage people to stay on-site through Fastpass+, there's really not that much of a difference right now, and the rumor is that even off-site guests will be able to make advanced reservations in the near future (assuming they already have Magic Bands).
The real advantage for Disney is the ability to better track guest movements through the park through RFID technology, and being able to directly market to specific consumers based on the information linked to a guest's Magic Band. That's really were Disney could make some serious money, not just getting people to stay on-site.
Disney just saw a way to make more money. Like airlines that still give a good service for first class while giving worse service for the rest, theme parks are doing the same thing. The middle class used to be the theme park's (and airlines) target. Not anymore.
The Fast Pass was more fair. And the time when everyone got on the same line was the most fair option.
Walt Disney World's Magic Kingdom
Disney's Animal Kingdom
Disney's Hollywood Studios
Disney California Adventure
Universal's Islands of Adventure
Universal Studios Florida
Universal Studios Hollywood