You miss the fact that what bitcoin does is a tiny fraction of what banks do. I mean, how do you do for example mortgages or corporate finance with bitcoin - w

You miss the fact that what bitcoin does is a tiny fraction of what banks do. I mean, how do you do for example mortgages or corporate finance with bitcoin - without hiring all the people and using all the resources current financial system does? Frankly, more proper comparison would be the resource consumption of using gold in the financial system.