The more I learn about this the more I'm sure most of the league has been doing the same for some time. In sum, it's being done not to "gain an advantage," but to neutralize the other team's advantage. So, really what it all comes down to is no different than the steroid period discussion... a few players, a few teams get picked off as whipping boys and object lessons while the League decides what it can do, if it really wants to, about the issue and the cheating. (this said, Houston's banging on trash cans was a bit over the top)