The reason there have been so many rumors regarding Texas is that it does have several advantages for a Disney park that most other states don't have.
1) Southern Location - Snow and Disney parks do not mix since the park must be open year round and tourists do not like visiting theme parks when it gets too cold (sorry Montana!). Yes, Texas does get a tad hot in the summer, but not much worse than Florida.
2) Central Location - Located halfway between the two existing resorts, which means it is more convenient to the audience fathest away from both those resorts
3) Water and Greenery - Central and east Texas are very lush, with lots of trees and other plant life. Nobody wants to go to a theme park in the desert. Las Vegas would be the only counter example I can think of, but they pay tons of money for the water to keep their tourist areas green. I don't think Disney would want that expense.
4) Right to work state- Unions add a great deal of cost when building and running a park. Not a problem in Texas.
5) Cruise line accessibility - Word is the
Disney Cruise Line will soon add cruises out of LA so that they can promote combination the Park/Cruise combination trips that have done so well for them in Florida. I suspect they would want to do this with any new resort they build from here on out if possible, and Houston or Galveston would meet this need.
The only states I can see meeting all these criteria are Texas and Louisiana (though parts of Louisiana are a bit too close to WDW). That doesn't mean they wont build in another state (we know they chose Virginia for the Disney's America project that was never built), but I believe Texas is a more likely choice than most other states, assuming of course, they ever get to the point where they need another resort.
I'm curious. You seem to feel that Disney would never build here. Why? What huge disadvantage do you think Texas has compared to other states?
Also, Disney will have to deal with capacity problems eventually (though not for many years). Raising prices is not a valid answer. The price/value point doesn't usually work the way you described it. When you raise prices, you either maintain your current customers, or you loose way to many to make the same returns you were getting before. Once customers leave due to price, they tend to leave in large numbers. The curve is very steep and there is usually not a point on it where you can make the same amount of money again once the prices become high enough to scare off your average Joe. Its nearly always more profitable to grow your market with more products than to try get more money through price increases.