the concept of bitcoin has actually been created for a long time. but we must admit that btc is currently developing very fast. To make bitcoin recognized by each country it is difficult. but someday I believe that bitcoin will be recognized as the single currency used in the world
For bitcoin to spread smoothly, you can't force people to just adopt bitcoin as a currency, let users choose what they want in bitcoin.
whatever bitcoin functions in general, bitcoin is free to use for anything you want #imo