And some teams would go for the cheapest "pile 'em high, sell 'em cheap" sort of dealer, or skimp on hygiene, meaning Hep B or potentially HIV infection through sections of the pro-peloton. Or another team would have "last yeasr" drugs, meaning they are not as competitive as the other team with "this years" drugs. As well as Pauls comments above.
Nope, the use of drugs within cycling has to stop, even down to the sunday cyclist who fools himself that a couple of squirts of ventolin will help him get up that hill. Level the playing field, no doping, personal strength & training only.