For what is presently happened now is Dollar obviously known by the people around the world. And most country adopting it too. But when it comes to online business, as an alternative payment, bitcoin is getting more useful into this scheme compare to dollars, especially the people in bitcoin world are very aggressive to make profit in trading platform,also in cryptocurrency.
Lol bitcoin though getting more popular does not beat dollar in term of payment in an online business. The term alternative tells that it is still inferior when it comes to adoption or usage in an online payment. Trading is much different to online payment and they perform separately. One example is gold, gold might be very active in trading but you cannot use it as mode of payment online since there is no one accepting it as payment, if there is someone i bet they are few. So we cannot use trading [profit as measurement on how it will go well in payment online.