What is the ultimate driver of demand for Bitcoin? Free instant global money-transfers that can not be charged back and are optionally anonymous? And you ask

What is the ultimate driver of demand for Bitcoin? Free instant global money-transfers that can not be charged back and are optionally anonymous? And you ask for demand?! What legal business has any particular reason to accept Bitcoin payments Any business that currently pays the >2% Visa/Mc/Amex/Paypal tax on every transaction?