I think "Greed can be good" is really what people should realize. Greed is bad in many situations. But if you design your system SUCH THAT Greed is good, then the system will survive.

Bitcoin has a bit of "greed is good" built in: the bitcoin miners are the mechanism that provide timestamps to the whole system. But higher-levels of greed were not accounted for (ex: ASICs farms using up so much electricity that the carbon footprint of BTC is HUGE now).