It isn't. Bitcoin isn't nearly big enough to cause systemic problems of banks, especially since most banks either don't have legal access to it, or because they

It isn't. Bitcoin isn't nearly big enough to cause systemic problems of banks, especially since most banks either don't have legal access to it, or because they don't see it as a valuable investment. Please note that while Bitcoin is mostly built to counter central banking, it also heavily encroaches on the traditional yield generating business that banks serve to the people: storing wealth. With bitcoin, (excepting mining fees) you don't have to pay for storage or services. You don't run a counterparty risk, and you can keep a moderate level of privacy.