Yes

Bitcoin as it is now can be private. However, if governments can listen in on what kind of traffic occurs on any person's connection, they could tell if youre attempting to butt them out. As of now, we have a right to privacy. If CISPA and all its cousins get their way, being anonamous on the web will be a thing of the past.
But you need to consider that bitcoin value differs and one day it can be worth 100$ and next day 70$. No country would invest into something like that, and how would you out a tax on it? I buy a car from you with bitcoins and i pay you 300bitcoins, tomorrow you might lose 5-10K $$$. Market is way 2 small, there isnt much $$$ in bitcoins....