The Star Trek Experience lasted 10 years, and it wasn't nearly as immersive as this will be.Yeah, thats definitely stereotyping.
You're always so overly concerned with how other people spend their money. It screams of some sort of desperate need to feel like you could do the same thing.
Here's the thing about the starship: Its ~100 rooms with a 3 day/2 night stay. That limits it to less than 20,000 booked rooms per year. How many Star Wars fans do you think would want to do this and have the money to do so? 100,000? Thats five years. 250,000? Thats 12 and a half years. The crazy idea that 'this will fail' is beyond silly. Its like saying that Savi's won't always be booked solid. Low capacity means its easy to fill.
Of course, it wasn't as expensive as this will be, either...