In a tribal society, you don't even need money. Resources flow like a river from those who have to those who have not. The system is based on kinship-based organization resulting in naturally occuring reciprocal exchange.
Modern society cannot function in that way because we're all different people with different beliefs and upbringings and we're all thrown together into something that could loosely be characterized as a society. The beauty of the free market, in such a case, is that it is superior to any other model in terms of correctly arriving at accurate prices. There is a glut of supply in the oil and marijuana markets, prices fall. When there is a lack of qualified IT programmers, wages for that sector rise.
Simplistically, where we ran into trouble leading up to 2007;
We artificially drove down the cost of borrowing money. We thought it was important in society for people of modest means to own homes. We thought it was imperative to stimulate credit card consumerism. So, the cost of credit was artificially pushed down and banks were backstopped by the American taxpayer.
If you want to talk about whether Lehman should have been bailed out... really, that's a debate about whether or not to preserve a sick patient on life support. We enacted TARP, bailed out GM and AIG, did the America Recovery Act, kept borrowing rates near zero, and added trillions of dollars to the debt. We saved a sick and dying patient. We preserved the status quo on Wall Street. We averted what would have been a temporary dumpster fire of a world economy.
If you ask me, we should have let nature take its course. We should have allowed for a total reset. But, that would never have been politically feasible.
"Remember, democracy never lasts long. It soon wastes, exhausts, and murders itself. There is never a democracy that did not commit suicide." - John Adams