The difference between power and money
An interesting idea -
Now, the pursuit of power is a zero-sum game: you acquire power only by taking it away from someone else. The pursuit of money, however, is not a zero-sum game, which is why it is a much more innocent human activity. It is possible to make a lot of money without inflicting economic injury on anyone. Making money may be more sordid than appropriating power—at least it has traditionally been thought to be so—but, as Adam Smith and others pointed out, it is also a far more civil activity. -Irving Kristol, quoted by Chicago Boyz and Maggie's Farm
You can see why politicians make such a mess when they get their hands on an economy.