You didn't understand my post. Might be completely my fault though, so let me add one last remark:

I presented two tracking reasons/models. You quote my model 1), which is about user tracking for your own sake only, without giving something in return. In other words: There's no direct connection between you selling out what you collect about me and my usage.

You talk about GMail/Facebook, which I presented as another, different example/model, 2). The quote does not apply here.

For these services I trade privacy for usage and I merely wish that the trade would be more transparent so that everyone and his mom can decide if they want to give up these details for your service or not. But - it's at least a "deal" of some sort: You give me something valuable/useful, I have to cope with your privacy invasion.