No, I think that it can't. It could be used along with traditional money but it can't entirely replace it. Unfortunately bitcoin has to many issues, weeknesses and characteristics that don't allow it to be fully used and implemented in traditional financial system. Volatility is just one of them.
Exactly, this will not happen because the fact that government still doesnt accept it because of it some characterics. In addition its now facing more problem unlike the conventional money. I think bitcoin will still remain as a virtual currency until it solved the problems about it. Above the fact that no sane government will allow a decentralized, non regulatable currency to be 'the' currency', bitcoin and fiat don't really serve the same purpose. Yeah, they are both money, duh, but you can't hold a bitcoin in your hand. Nor can you make a bitcoin transaction while you don't have an internet connection. As useful as bitcoin is, its benefits rapidly degrade in a mostly offline world. Physical possession of the token (fiat) will always trump some numbers on a blockchain.
The wallet in your jeans pocket will never get stolen because of a virus. The 20 bucks fiat you have will still be 20 bucks when you wake up the next day. And most importantly to me, there is not a giant ass online record of what's in my wallet that everyone can peruse at their leisure
