If Bitcoin becoming a mainstream payment system in the future there will be no banks controlling our money ,and the ideal of faster more cheap international payment will be more interesting . imagine sending money to someone with out any fees ,well it will mainly reduce the government control over citizen ,but first bitcoin most become known to the world .so what are your taught on this topic
Those things only happen in fantasy since government in reality have power to decide on whatever things they like to implement. If they see that on Bitcoin that it will create a certain conflict with their owned fiat also with banks then provably that what gonna happen next is provably that they will ban bitcoin to circulate on their jurisdiction.
Remember that lots of people in government always pays attention first with their own interest and those things you mentioned is hard to happen that's why right now global accepted towards making Bitcoin as currency still not happening. But for sure Bitcoin will became an alternative from fiat and if this is really the case for sure that we can still continue to use Bitcoin also those regulators would provably not see any conflict then provably allow people to use it.
For now, big entities see possibilities with Bitcoin. Potential. The ability to work around with it and use it for themselves, in propaganda, in investments, etc.
So for now, we are all set and good. But I don't think they would start to view it the way you described. And that Bitcoin would become an all-in-one solution for an alternative to fiat.
Surely, big purchases are greatly done with BTC, but smaller ones, the ones you do every day - no.