First premise: The economy is better as more truly moral. That means that it rewards morality. Morality is the path toward the end of suffering.
Second premise: The problem with the economy can be solved by improving monetary policy. Monetary policy is the rules of lending money.
Third premise: The way lending works now is slightly broken. The evidence for this is seen in blights of poverty. Poverty is the lack of sufficient money to self-actualize. This broad definition puts a focus on health and wellness as the most basic need. Up from there are higher levels of social and emotional joy and peace. Ultimately, self-actualization is potentially individually defined. Note: this is a theory of monetary policy, not ethics in its entirety.
Fourth premise: A policy that limits the duration of time money can be held by any individual or corporation except the government would be tremendously beneficial. This would require that money be lent or spent within a shortened period of time. I suggest one year.
Fifth premise: Instead of taxes, the government takes any “rotten” money. No income taxes! No property taxes! No taxes! The government needs to be content with the system. It’s the government’s job to “enforce” the rules and keep the other rules of the game that are already there in place. Control the supply of currency if necessary, set the prime rate, etc.
All else pretty much stays the same ;).
In terms of “enforcing” the time limit rule per account, this is where crypto can help!!