As you've probably seen me post before regarding corp welfare, I'll say 9.9.9 if implemented as advertised would destroy the healthcare system and quite possibly Wall Street. But as we all know, nothing is as advertised.
I'm not advocating 9,9,9, just saying. Plus you can darn well bet that we would get the worst of 9,9,9 and the best of it would be negated by tax loopholes.