Not reporting income denominated in bitcoin will simply result in prison time and financial penalties measured and payable in the government's currency.
To me it seems to be a choice of what does big brother value more - money or information?
Banning a business from accepting bitcoin would be as hard as telling a business they couldn't give stuff away for free. I think they could shut down the exchange portals, but they couldn't keep people from trading goods for BTC.
Currently, the central banks (the Feds, and the various EU central banks) control the currency (by control, i mean they are the only ones able to print more of it). Now, i don't really know who controls those banks, but i m willing to bet that they are some powerful vested interests there. These people do not like the gold standard, simply because having a gold standard strips them of their power they currently enjoy.
Bitcoin, being a good candidate for a digital gold standard, will be targetd just like the gold standard was targeted in the 70's in the US of A. I really wish bitcoin could become recognized by the normal peoples of the world, but i think it can't, because there is no force behind it. The monopoly on using violence is the only way to have a currency adopted, and i don't see bitcoin getting any of that. my prediction is that bitcoin will be relegated to being a niche currency.
I see it competing more with companies like Western Union and PayPal than with the USD.
http://anonymity-in-bitcoin.blogspot.ie/2011/07/bitcoin-is-n...