You destroyed someone else's pre-ordered dream
Meh, standard practice is to "preorder" more "preorders" than needed.
Say a store wants $5 minimum on a game, and you put $10 down. There is a good chance that you just "preordered" two copies.
When I was still working in the industry, we were counted on the number of preorders we made in a day, and preorders came with coupons. In my case it worked out to the benefit of everyone. All the extra copies made up for the fact that corporate NEVER ordered enough "spare" copies of the game that we could put out for general sale. Usually we had more general sale copies at the store the next day, but the 3 copies we got on launch day just won't cut it.
Think of it as the "little guy" sticking to the "man" for "Joe Blow" that never wants to preorder a game when asked
Halo 3 for example. we got 75 copies (hey, its a lot for a smaller store like mine was) 25 for general sale and 50 preorders. Well, only 30 of those were legit preorders. We sold every copy except for a few legit preorders that got picked up when the store opened the next day. If not for us bending the rules a bit we would have had to turn away 20 sales (@59.99 thats about $1,200 bucks) most of which were what I would call a casual (as in has no set store they go to for games) gamers, and those customers may never have came back. But we had the games, and I saw most of them back in the store.