Later you claim that is just fine to support big banks because said banks exist to "spread risks". But of course the biggest risk for a country is in the existence of banks that are too big to fail, since they need to be saved by the government. Therefore, banks in fact perform ZERO risk reduction. They CLAIM to take risks away from the system, but when a crisis occur the whole tab of bad betts will be paid by the citizens of a particular country, not by bankers.
As for control of the US and EU, just look at who is responsible for economic policy in these places and tell me if they're not from the same half dozen banks that are already deemed to be too big to fail! What a coincidence...