One reason is simply that family-owned businesses don't want to share the company with outsiders. But another reason is that many firms feel that on the stock market "you can't get help when you need it." Indeed, new stock issuances must pass rigorous scrutiny before they can be placed on the market, to protect the interests of investors.
國內上市公司只有一百卅家，追究其因，家族企業不願把自己的公司與人分享，固然是部分實情，但「當我最需要的時候，牽不到你的手」，恐怕才是那些自我奮鬥多年的優良企業，不願上市的根本原因。