Comment Re:Google's X Prize for those going to the Moon (Score 2, Informative) 74
Money is nominally a store of the value of people's labor(*). That's why we donate money now: we're giving the "liquid" form of our labor to a charity group, so that they can directly buy the products and labor to fill a need.
The existance of Google's competition directly refute your idea. It's private money being staked by Google and the team sponsors that made this price possible. Even governments have to use taxed money: moving the labor from those taxed so that the people in NASA/ESA/etc. can get fed. Without some way to "move" people's labor efficiently, you can try the North Korea approach (a country of slave labor), but we can all see how efficient that is.
A lot of people have come up with alternate economies, and most just call money by some other term. The rest usually just starve.
(*) In a fractional-reserve system like ours, where money gets "created" when it's borrowed, money is really a promise of future labor instead of a store of past labor. This makes a lot of the characteristics of the current economy a lot easier to understand. (IMHO, you can argue that money is an energy proxy, and that human energy (i.e. labor) will soon be less valuable than other kinds of energy, but that's an entirely different topic.)