What if other citizens are prevented from running such business too? Mt Gox almost got shut down because they are competing with the God-given monopoly rights of the banking cartel. The banks do not like to serve the poor but they are also very efficient at getting anybody shutt down who does. Seriously, they are now trying to shut down the entire bitcoin industry, not because it abets drug dealers, but because it would give alternatives to the poor.
I think national governments are not going to feel like rushing to the aid of virtual currencies - from my understanding they have the potential to eradicate tax bases.
