What I don't understand is: why doesn't evolution weed out the Vegas types? Where does the steady new influx of money come from? Or was it just the housing bubb

What I don't understand is: why doesn't evolution weed out the Vegas types? Where does the steady new influx of money come from? Or was it just the housing bubble that provided the money (in the end even tapping into retirement funds of iceland)? Maybe now we have reached a point where most Vegas types will be eliminated. Perhaps not a bad thing? Except they are probably just poor individuals who were too lazy to think about finances for themselves. The first thing I learned about investing is "don't invest in anything you don't understand", which pretty much excludes complicated investments constructs, and is not that hard to digest. But what would be the solution? Forbidding "gambling" to individuals would possibly result in communism, as it would imply the state would have to dictate the investments.