“The most effective way for a businessperson to maximize profits over a long period of time is to follow the highest standards of ethics.” 还有一个argument找不到了，就说A钢琴厂做什么高质量的钢琴，B钢琴厂制造digital piano，B的revenue上升，A的下降，于是A决定也制造digital piano，并且定价是variety range of price，等等的 | 
