One of the arguments against Armstrong is that he had unfair advantages over the others, including the others who doped, and that at least some of those unfair advantages stemmed from having the money that is the subject of the OP to buy those advantages.
If the unfairness is that he is still free to ride, then that applies to everyone who was caught up to the point that they were caught (Pantani, Ullrich, Basso, Rassmussen, Heras, Beltran, Hamilton, Landis, Millar, Musseuw, etc., etc.), and applies to everyone who dopes but has not yet been caught (Hincapie, Van de Velde, Contador, Schleck, Evans, Menchov, Petacchi, Cav, etc.). What is the uniqueness of the Lance Armstrong situation that deserves such ire besides his relative success?
Now, if the reason he has not yet been caught is because he paid someone off, that's different. Now, I know the known UCI payments are highly suspicious, but does anyone know enough to be convinced that payoffs specifically to counter positive tests occurred?