Well, nationalization plays a large part in the way we perceive a banking system. Think about 21st century United States banks vs. others in the world -- I'm thinking specifically of Swiss banks and their legendary solvency, privacy, and trustworthy branding. In contrast, nobody trusts the U.S. banking system anymore. Our brand is tarnished, so our central banks are seen as lower-class. Even smaller countries are trying to consolidate their holdings to local, nationalized banks so a collapse of the U.S. dollar won't ruin their economies.