IMO it is extremely common. It is practically the default way people think government should work when they have done no reflection on it (which is still a pretty high number of people, few people reflect that much on how government works or is structured). This is why everyone bitches about how taxes are high and doesn't even know what's in the government budget, or whether or not taxes are ACTUALLY higher than X years ago. They just know that money gets spent and its *THEIR* money so by golly are they gonna get mad when something doesn't work how they want it because it's so *obvious* how to do it right.