Agree to that! Bitcoin was decentralize which is far from realization that government will embraced and change their current system to move and use it as their main currency, is more on alternatives sides of fiat where you can transact using this system and function same a like with how currency works.
Well, the government will never allow an uncontrolled entity to dominate its economy. That goes to Bitcoin too, but we are lucky that some governments acknowledges Bitcoin as a medium of exchange while others see it as an intangible asset. Bitcoin even though won't be used as a major currency of any country, it will always be on the sideline as an alternative
Not only businesses but some government acknowledge Bitcoin as mode of payment, that being an alternative. So I guess OP is missing something when he said that no country has approved Bitcoin.