I have Pixie ... they block ALL WEEKENDS, all Monday holidays, weeks in December, April, Thanksgiving .... and we can't make more than 3 park reservations. They have reduced the impact these passes have on busy times. Imagine if they just escrowed all that money and let it grow? And with Pixie appealing to local those folks will walk in dine, drink, shop and go on a few rides. They are spending more money with less hesitation. For those not local they may also be booking hotels, def spending money on food and again less hesitation on upsells. They fill gaps for Disney.
It works for us (we went down from Platinum pass) because we had started skipping weekends (beach, Disney, beach), we avoided the holidays and I'd rather spend money on upsells. In the end they likely get more cash from me than they did before with Platinum. (not counting hotel)