Sovereign Wealth Funds

Sovereign Wealth Funds represent an attempt by states to benefit from markets but also have the potential to inject political considerations into macroeconomics. Is this inherently a bad thing? Free trade orthodoxy might say so. But, where is the bright line that distinguishes the familiar economic collective of individuals (i.e. the corporation) from the economic collective we call the state? In other words, will the time come at which free citizens endorse increased activity of such funds in the name of economic well-being? Will future citizens of the world look back and have difficulty understanding the distinction between capitalism and socialism?