I don't see how 'everyone' is going to play a waiting game when Leipheimer, Klöden or F. Schleck are attacking. Unless one of them had lost a fair amount of time already, which is not unthinkable.
It's rare to see a GC candidate attack early and 'paralyze' those who try to chase him. And if the one attacking is not a GC candidate, then why chase so hard?
Well, Tour stages are not about the yellow jersey, as a rule. In most of them, the podium status quo is maintained. However, many teams are interested in winning stages and/or other classifications. So it is rare for all teams except the one with the biggest GC favorite to do nothing at all. The moment a 2nd place is endangered, the team currently holding second place will start to chase, for example.
You seem to think that it is in other teams' interest to ride specifically against Astana. That is a misconception; it is in any team's interest to ride for itself. Rabobank only like to see Astana lose if they have something to gain. They're not going to help Radioshack just to make Contador lose. You seem to call that 'racing to win' but it's not the same thing. Racing so Radioshack can win, sure, but there is only one team interested in doing that.
Contador has a good group of men around him, and he won't be wanting much more team support. Radioshack and specifically Armstrong are seriously hampered by the fact that there is no TTT. The single ITT is slightly in Armstrong's favor, who will have to struggle with his former specialization only once.