Still. Supply is so much less than demand that if we were all forced to chose just one shoe that month, we would still be under supplied. These things dont sell out because the same person buys every release. I have almost never been able to afford every release I wanted in a year (even back when they only made 8 or so a year), nor have i ever wanted every release in a year and they still sell out. You may weed out some people who cant spend that much bread in a short while, but overall there is still more than enough demand to go around.
If you grouped every retro released in a year into just a few weeks, despite the fact that most people wouldn't be able to afford more than a few, they would still sell out quick. Supply is that short.
Even then I still dont think it matters. They have been grouping a lot of these together since last year and they are still day 1 sellouts with few exceptions.