What is fairness in Buddhism?

Recently, there had been a lot of market turmoil in the world as a result of one man’s action in imposing unilateral tariffs. The justification was that free trade is not as good as fair trade. I suppose if you think about it there is some truth in that free competition tends to benefit those who are more competitive or had some kind of *fair or unfair* advantages. I know the Buddha encourage the practice of dana or giving to those who are needy and worthy. But in any competition, there are bound to be losers. Giving to losers appeared unnatural and even in the wild, weaker animals perish. I am not saying this system of free competition is perfect but I can’t think of any better solution either. How does Buddhism strike a balance view in all of these? ---------- ***Appendix A*** In [SN4:20](https://www.dhammatalks.org/suttas/SN/SN4_20.html) , the Buddha was mentioned to have thought about this issue of just and righteous rule of societies. One that does not cause sorrow to the ruler or the people. Sadly, it appeared that there was no mention of any solution.