The staff to guest ratio at a hotel like the FS is higher then lesser rated hotels. Think club level (or higher) service for the entire hotel.
Transportation won't be an issue. FS guests could take taxis.
FS failing seems very unlikely. The hotel becoming a low priced Disney Deluxe...

Never happen. Standard rooms at WL and AKL are less expensive then other Disney deluxe hotels. Those rooms are also smaller. A deluxe room at WL and AKL are similar in size, and price, to other deluxe resorts. Suppose FS can't get enough guests. Every chain would love to have a high end property in that location. OK Hilton already has the Waldorf.
Posters in this thread kind of confirm what I suspected. Posters on Disney fan sites will continue to pay premium prices for less then premium service in order to experience "Disney Magic". That's not the part of the market FS is looking to capture.