Anonymity is what shifts the Overton window. When Satoshi Nakamoto chose full anonymity (at considerable personal cost, presumably), it was in the context of projects like egold, Liberty Reserve which in that time period were being prosecuted for doing similar things. *After* Nakamoto, the Overton window had shifted, since no one could prosecute him, and now people start their own currencies all the time and there isn't any discussion of prosecution or prison. Today, Roman Storm and the Samourai Devs are facing prison time for writing privacy software [1]. If someone writes something similarly successful/high profile, *properly and fully anonymously*, the Overton window may shift again.

[1] in both cases, there was monetary compensation for them embedded into the software's action. This complicated the argument considerably, but even if you think that's a central point, note that Nakamoto was "compensated" too, with mining; it's not, as commonly believed, a known fact that none of the mined funds were spent.