If one applies the "Lance rules" to the other guys the only people who doped are those who failed an official test, ratified by the UCI, WADA, Nat Federation, All Media, All sponsors, Congress, his fans, The president, God....
If just one person can cry foul then there must be doubt. And we can't rule out aliens and spies spiking samples.
If there is a possibility of doubt then there can be a probability of innocence.
Although Floyd Landis and Greg leMond definitely did dope as far as these people are concerned.