I do think they need to start increasing their run numbers. Adding 2000 copies sounds like a lot, but considering these things sell out in minutes, at this point they are just leaving money on the table and collecting disappointed would-be customers.
It's better to be safe, than greedy.
They may be leaving money on the table, but the thing is they've already taken enough off of it.
Trying to guesstimate the number of copies to sell isn't an exact science, and the numbers they have worked out in advance are clearly enough to sustain them, and continue to keep things running smoothly, and growing.
Just remember that increased quantities doesn't just mean increases of copies sold. It'll mean increases in time spent shipping, increases in staff, increases in materials, increases in other overhead costs. I'm sure if they really wanted to, they can do it, but it's clear that they don't feel the need to do so as they've always accomplished what they've set out to do, and that is to sell out every single last copy of their releases.
We may think that if there is still inventory at the end of the day, that is great for us. But we don't really know how they feel when there is inventory left at the end of the day, nor how prospective partnerships in the future will view slower than usual sellout inventory. Part of this model isn't just to sell out quickly, and make money, but to show interested parties that this is a viable medium for them to sell their wares in, and they don't have to worry if it sells out.
There's always going to be some batch of disappointed customers, but that's just part of the model they've designed, which has been very successful up to this point. I mean, even when they increased quantities in the past, and did have some crazy numbers for some releases, when they weren't sold out within that first day, people started to complain that they aimed too high with the quantity numbers, and they should have chosen something lower. Like really, they just can't make everyone happy no matter what the case. Just trust that they know best right now, and if they do feel a quantity limit is warranted for particular releases, that they'll do it.