Bitcoin is still not accepted in some countries.
Will it adopt by every country by this year end?
I think it has to be 2 years more because actually Bitcoin is still not be legal at most country, specially when there is a big scandal with Bitcoin on money laundrying , things are now complicated to say.
South Korea used to be a big country with big investors who adopted Bitcoin but it's no more for now so it turned into a miserable situation for bitcoin.