Surely you have an apartment number? Or is it like in many places in Europe, where the address is the building number and name of the recipient?
These sorts of things are pretty cheaply routed around for those making scalping into a volume business.
Sure you can probably lock things down so you catch the vast majority of these mechanisms, but not without impacting legitimate users. So it's a tradeoff of how much more of a hassle do you want to make things for legitimate customers vs. how much you want to lock out resellers.
You don't even really need a doorman in many buildings either. There will be a shared mail room (if you're lucky) where packages get dropped. If you work from home you just watch the UPS/Fedex tracking and run down the moment it gets delivered to snag it before anyone else sees it.
The few folks I know who did this sort of thing were less professionals making a living off it, and more someone who wanted to subsidize their gaming habit by grabbing 3 or 4 units and keeping one while flipping the rest. They'd just ship to friends/family. The folks buying 50 units at a time are pretty rare from what I can tell.
Perfect is the enemy of good.
You just begin inventing apt. numbers - having up to a thousand apts in a building is not suspicious. And once you cross a thousand, you can invent new buildings by strapping letter names to your home number, so that gives you a-z * 1000 = 24000 unique addresses you can generate easily. Without much hassle you could extend that to a million.
Requiring a unique mailing address is just as pointless as a unique email.
The answer is "no one".