If you are big daddy owner, centralized state permits you to have access to the top guy who can do anything.

It is a lot easier to corrupt one guy, then it is to do one guy in every state for example is the logic here.

This is inherent defect of centralization. Sure we can get a lot of shit done effectively if everybody is good faith actor. And progress has been made but it was done with a ton of grift that we just accept

This isn't really accurate, though, this is just an argument against democracy. Recall elections are standard Marxist practice, which pretty much eliminates this problem outright. It seems like you haven't engaged with Marxist organizational theory.

Capitalism and socialism are economic system for property. We are talking about the state in of itself here.

They are always present linked. You can't divorce them, the Base creates and supports the Superstructure.

I would posit the issue not economic system choice but rather corruptions of the ruling class.

This is generally unfounded.

I bet any properly set up system would work as long as it was designed to work properly.

You can't "design" a system, that's utopianism.

If you notice the best systems we currently have are actually a mix of both.

No, the best systems currently are Socialist. There are no "mixes." Or, at least, everything is a mix, no system has made it to Communism yet, but the best systems are run along Marxist lines.

There is a strong correlation between quality of life of the working class and corruption.

Countries with low corruption are able to deliver high quality of life because they don't a lot of blatant looting.

I bet this will be the down fall of the US empire, the parasite class taking too much and it is causing serious social issues for Americans. They know something is wrong bit they jerk politics without realizing it is a futile exercise.

This is more correlation and not causation.