This is highly possible. Bitcoin can be a general currency spent by the whole world if the world want to have a general currency.
The problem is that not all countries consider Bitcoin as a common currency, so it still takes more time for Bitcoin to be recognized as a common currency in the world, although this will not prevent Bitcoin from continuing to grow and get promotions from countries that have adopted it. as the legal currency in terms of payment for goods. So it is only about time for Bitcoin to be considered as a common currency in all parts of the world.