That's an interesting question. Not having any type of a marketing background myself, my guess is that they have all kinds of studies which tell them how much they need to offer discounts from year to year. Whether or not existing rack rate reservations impacts their studies is something I would think they would factor in? I don't know. For us, we usually try to book bounce back offers when they are available or wait for the pin code emails/
free dining offers.
Here's another interesting question for you. How many people do you think book rack rate reservations and have no idea that such deep discounts are available? I have helped numerous people at work book their vacations and believe me, some of them have no idea about the discounts, and are willing to pay the full price. I of course do everything I can to steer them toward the discounts, but I do think there are a fair number of people who simply have no idea they are out there.