It's wrong to take someone else's ideas as your own.
Jeff's friend John tells Jeff about a great new technology idea John had that could make tons of money.
Jeff wants to make money.
Jeff decides to fun John's idea in exchange for a share in John's profits.
Jeff decides to copy John's idea and get it to market before John does.
John appreciates the startup capital and makes a successful company.
John never forgives Jeff for the act of capitalizing on John's idea.