libertyhood
Poster
If we define greed as rational self-interest, or some sort of maximalization, to the exclusion of proactively considering the welfare of others, then the best check for greed is greed. When you are advocating fully for your self-interest, and I am advocating fully for mine, then when we get together to maximize the benefit from the collaboration, we each have to negotiate so that both of us benefit. Or if there's not a win-win, then we just don't collaborate.
If we define greed as seeking personal benefit to the active detriment of others, i.e. exploitation, lying, extortion, theft, violence, externalized costs on third parties, etc. - then the answer is that we agree on a system where these things are not permissible and respond to them with sufficient material consequences to make them non-beneficial to the greedy person's self-interest.
If we define greed as seeking personal benefit to the active detriment of others, i.e. exploitation, lying, extortion, theft, violence, externalized costs on third parties, etc. - then the answer is that we agree on a system where these things are not permissible and respond to them with sufficient material consequences to make them non-beneficial to the greedy person's self-interest.