In business investing its the opposite. They really do think they stand a chance at making millions even when the odds may actually be worse than gambling in some cases, especially if they fail to do their due diligence.
So maybe instead of regulation we simply need a legal, notarized document signed for every investment that states "I am aware that I stand a very high chance of losing all of my money and relinquish my rights to sue anyone involved unless outright fraud has been established." Probably still wouldn't work, but its worth consideration.