一个原因是在大部分上市公司中，股东都是消极投资者，他们向足够地了解企业以决定是买入还出卖出；他们并不像卷入企业决策中。
One reason is that in most publicly traded corporations, shareholders are passive investors who just want to know enough about the firm to decide whether to buy or sell; they do not want to get involved in decisions.