The NFL draft, unlike the NFL on game-day, is not a zero sum game. One team's win is not necessarily another team's loss. This is for the simple fact that very few players are "once-in-a-generation" talents (no matter how many times ESPN experts use this phrase).
So the draft itself is not the an irreparable event. That said, there are always losers on draft day. Team's can commit, as Bill Parcells calls it, "economic devastation" by drafting the wrong guy in the top ten.
They can do equal damage by adding a consistent string of bad players in lower rounds (though the long term effects may not be comparable.)
And while there certainly were many winners on draft day, here's a look at some of the losers...