The National Football League sent six of its lieutenants to Minneapolis the other day to advertise what essentially is a take-it-or-leave-it offer. Either you people give us the tax breaks we want so that we might not be fettered by the reasonable expectations of doing business or you don't get a Super Bowl. Capiche? "It's an incredibly competitive environment,'' said Frank Supovitz, NFL senior vice president of events. If Supovitz wasn't wearing a tie, he would have said, "Look, we've got other cities that will do what we want, so you either play by our rules or you can stuff...