No country will give up its absolute power over the issuance of money. That would mean politicians, banksters, and taipans would have to give up their power.
Never will be,
not unless we decapitate them with technology. And Bitcoin can't be it, it doesn't have anonymity.Bitcoin cant become currency for your stated reason. The majority of bitcoiners believe it will.
I agree with the bolded statement (in part). However no cryptocurrency will ever be anonymous and thus become currency. If somebody has a hugely successful business and no transactions are shown in yuan (at his local bank account) (or any other government currency) it will be obvious that he is using cryptocurrencies instead of yuan.
EDIT: I believe bitcoins price will collapse as I dont see Bitcoin being used as a store of value (or as a currency as explained above).
Creating and selling digital works, such as computer code or object designs downloaded and output on a 3D printer, could in theory be entirely anonymous.
No cryptocurrencies cant be anonymous (not bitcoin not altcoins). Businesses are always public. If you have lots of customers you have to show lots of profit. Having lots of customers is always a public act (selling food (supermarkets), cars, laptops, machinery, transport, popular software, internet businesses (google, yahoo, facebook)). If your dollar/yuan bank account does not show corresponding transactions, government will know that you are using cryptocurrencies. They will execute you if this is the case. Anybody who is caught holding onto or accepting bitcoins will be executed. It easy to track businesses (as I already explained) and individuals wont hold onto them if no business man dares to accept them.