Bitcoin wasn't designed to circumvent regulation in-and-of-itself; it was designed to empower it's users should they choose to circumvent regulation...
Bitcoin will be regulated by a central authority or several central authorities. This is the human interface of Bitcoin and without regulation (the perception of security) the mainstream will never catch on.
Bitcoin is a tool made for reallocating financial authority. The power is placed back into the hands of the masses who will decide for themselves how to use it.
The exchanges will always be regulated. This is a central point of failure that we will need to acknowledge and work on minimizing...