Our Lord's command to "love thy neighbor" ought to include trade and commerce 🤔
Discussion
Not everyone is religious. However simply saying "don't be an asshole" is universal.
"Not everyone is religious," but they ought to be.
This is the way.
PS: "Don't be an asshole" is a religious claim. It just so happens to be nearly universal in adoption, thanks to Christianity.
The only reason we evolved as a species is through group/social cohesion. This is a bedrock of civilization that predates Christianity.
Agreement upon common values is a good, general definition of religion.
The fact is that "do unto others what you would have them do unto you" is not a universal across history.
No values are completely universal. As I understand it, humans have socially evolved to hold to in group and out group distinctions. The rule of reciprocity is fundamental to in group social cohesion and predates Christianity as demonstrated below. Your claims are not substantiated by history and are religious dogma. 
https://en.m.wikipedia.org/wiki/Empathy
Read the sections on “Development” and “Genetics”
Just because they can be found many places doesn't make them non-religious. The cultures that tried to do away with religion also lost common goodness, implying the two are linked.
I'm going to have to take issue with that, that's not a religious claim at all. It has its roots in the concept of doing unto others only what you would have done to you, which has appeared in cultures throughout history, including thousands of years before Christianity was started, so... yeah not religious, just basic decency.
It's currently not part of modern Chinese culture. The more sly and cunning one is to more he is lauded over there. Therefore, it is not universal.