I wonder this: if the usual banking system will disappear as such, then she will leave and credit system, leasing and installment payment, debt, etc. As there is no centralized authority that can issue and track correctness of performance. To some extent, this is certainly good, but in fact people who can not immediately earn a large amount of money and will remain in the lower levels of life, which gives the modern banking system (though not ideal). What do you think about this? How to Take a loan in cryptocurrency?
Do not even dream that the current banking system will ever disappear. Crypto currency is not capable of causing significant harm to banks. Even if the crypto currency could destroy banks, the state will never stand aside from this process. Once the crypto currency would create a threat to the existence of banks, the state would severely suppress such an attempt, up to the complete prohibition of the crypto currency. Banks are an integral part of any state. A state without banks can not exist. Therefore, it is not necessary to conflict with banks.
Crypto currencies can destroy banking community so that the government didn't allow to legalize the crypto in the country. Many investors from the government are involve in investing in banking business. Many of them will not allow to make any space for crypto because they will not and they cannot control the flow of money and exchanges of money in crypto world. It is impossible for banking companies to let go or go to the competition with the crypto business.