The only solution is to forbid money management as we know it.
There are a lot of assumptions, first and foremost that all investors are trying to maximize their returns with no regards to risk. I know many people who choose investments that are less risky and thus have less of an interest rate.
People always look at money management from the investment side (ie, what is my return) and don't think about what is actually going on... ie funding new ideas/projects, if you outlaw money management then drastically alter the way that people can get funding -- greatly increasing the misallocation of capital.
A better solution would be to tell people to research what they're investing in, if it doesn't look right or you can't understand it don't invest in it.