Sometimes you can't get'em all. And sometimes you shouldn't try.
It never ceases to amaze me how people here both ignore and are totally devoted to the fundamental problem (from a guest standpoint) at WDW. There are too many people at the parks. Yet whenever anyone suggests anything that might limit the number of visitors, people balk louder than they do at any other suggestion.
I understand that the capacity for the MK is about 100K. But while they might be able to physically accommodate the crowds, the rides can only take so many people at a time; the more people in the park, the longer the wait times. FP- came out when there were 14,000 fewer people a day at the MK, a nearly 30 percent increase. You can complain about FP+ all you want, but in just one year between 2012 and 2013 attendance is up a million people -- that's an extra 2600 people a day -- and as long as that number keeps growing, there isn't a system that will solve the fundamental problem.
Fps are hard to get because too many people want them. FP- went away because as the crowds got bigger, more people developed touring strategies to maximize their use. So RD became the catch all, and as more and more people came to RD because it eventually would become the only way to get FPs for the headliners if they didn't change it. So now you have to be up at midnight to get the headliners because there are so many people who want them. 86,000 people in the resorts all able to book up to 70 days out. Anna and Elsa take a minute for each greet -- that's 60 an hour, 900 in a 15 hour day (maybe 1800 since I think they've got it split now). You figure each party is four -- that's 7200 out of 52,000 people who can physically meet the girls. Even if you double it four A&Es, there aren't enough passes to accommodate all the people. Even the rides -- 7DMT has 12 people in a car (I think), a car comes every 15 seconds between loading and unloading and you're at 43,000 potential rides in a 15-hour day. On an average day there are 52,000 people there. So there are going to be lines no matter what management system they choose. The only way to reduce the lines is to reduce the number of people attending.
The problem is, I don't know what the ticket price increase cut-off number would be. I think you'd get plenty of takers at $200 a ticket, but doing that might diminish your resort stays, and the resorts are a fixed cost -- you have to pay for them regardless. So why not maximize the profits from the resorts and increase the benefits for staying in them by giving WDW visitors what they really, really want -- smaller crowds.
As for your question, though, Disney would still get the people -- you don't come to Orlando and not go to Disney, unless you've already done it. But they might create more demand for the resorts which leads to higher revenues from them and those revenues would more than offset the lost attendance.
