Bitcoin will be regulated because the power of the state demands it, and aside from the state's vast power, the regulators actually have the reasonable argument that while they may corrupt, venal and malicious at times, giving their power to completely random-ass anonymous people wouldn't be an improvement.

IE, The power of unregulated bitcoin is not "power to the people" but power to Silkroad founder and from there one would guess the Zetas and so-forth.