“Indeed. Anyone wish to open a book on when Obama will cross that line?”

I suspect that he already has; it simply has not yet become apparent. Even if the bills have not yet hit, the signals have been abundant that a confiscatory period is before us. I suspect that large numbers of the 10% are figuring out ways to minimize the impact to maximize net worth over time.
I have lived in a lot of countries where cheating on taxes was a national pastime that carried absolutely no social stigma. The USA has a long tradition of tax avoidance/evasion but people mostly still live within the law – unless they are Obama cabinet appointees. It is not a big stretch to join the rest of the world’s tax cheating acceptance – we seem to be following Europe on everything else, why not this?
I predict that we evolve to a cultural model like Chile, where cheating on taxes is considered normal but everything still works.
It will be interesting to see the outcome of the UBS – Switzerland _ US Treasury struggle. If the Swiss win, which I think is likely, look for a steady stream of funds flowing offshore.