The major part of today's economy depends on fiat money. Besides governments are scared of the fact that they can't supposable control it as it offers additionally portion of protection to the users so it is hard to get information about users that can be the reason why a lot of people are still suspicious of bitcoin.
That was before when people were suspicious of bitcoin crashing and bitcoin coming to take away their money with the system of investment. Bitcoin is not competing with fiat because fiat has stayed long way before the creation and also people know fiat since age's. What ever we do to boats up of economy of country today is with the fiat. When Bitcoin will be included for the boats of any country economy is when we have massive adoption or if is being legalize as a legal tender for the country. For now i say bitcoin never circulates everywhere I'm not wrong, because the wider the speculation the more people have interest