- Sales of gold are already subjected to taxation in nearly every country. I don't know if the government will succeed in taxing BTC. I guess only if BTC needs to get converted to currency, because then the banks and the IRS get involved. But if we can avoid that conversion for payment (directly in BTC), the IRS and the government are bypassed.
Our government taxes BTC also but it does not an important thing, because the taxes are good for building the infrastructure, and I won't debate taxes. Because the real investor is looking for profit, in bitcoin the real investor definitely got the profit, their money sprouts a hundred percent over time. It's different with gold because gold just maintains its value (or against inflation), you don't get a profit when hold a gold and the value of your money does not increase like you hold bitcoin. (we know Bitcoin makes your money's worth folded, right?)