Did you read the article at all? How is mining BTC an option for regular people? Have you attempted to purchase a foreign currency? It's usually a two-click operation at most.
I totally agree that exchanging cash for bitcoin should be no different to exchanging cash for another currency, but given bitcoins decentralized nature and the fact that none of the major currency exchange companies haven't had the balls to do this means unless you change the regulation so that new companies can move into the space then not much is going to change.