If this was the case Disney would not be going to such great lengths to eliminate double booking. I have seen plenty of guests upset that the restaurants are booked solid I have also seen many of the 2nd tier restaurants with many empty tables and a reservation screen full of no shows.Of course Disney wants its restaurants at max capacity. But I guarantee you, 99% of the time in the restaurants this is being implemented at there will be a walk-up guest to take the place of the no-shows or recently cancelled reservations. So there is no lost revenue. Have you ever heard the upset families who show up at restaurant podiums for dinner only to be told there are no tables available for months? Or specifically asked if there were any cancelled reservations or ways they could squeeze in another group only to be told it was impossible. These places are at capacity even during the off-seasons.
I unfortunately agree something needs to be done, but I think the advanced reservation system could use a complete overhaul that is more fair to more guests, rather than just those who have the luxury and or willingness to book 6 months out.
"Fair to everyone" is an impossible goal when you are trying to run a business. Sure, Disney could book ADR's to 50% capacity and then hope that the other 50% shows up but why should they do that when they can create a sense of urgency and book the majority of their restaurants to capacity 6 months out. I know that I would much rather have a guaranteed 100% than a possible 100% any day of the week.