What is the difference between the founder and the external manager's shares in a startup company?

According to a survey of 575 North American startups by Noam Wasserman, a professor at Harvard Business School, 1) founders who are CEOs usually hold 25% of the shares, and if they are external CEOs, it is about 5%. 2) The founder COO holds about 10% and the external COO holds about 2%. 3) The founder CFO holds 10%, and the external CFO holds about 10%. Kai-Fu Lee replied to Weibo: The founder bears the greatest risk and deserves a particularly high share, which is the same at home and abroad. In the field of Internet in China, the founding CFO has hardly seen it (unnecessary), and the CEO shares will be higher than others. Equity distribution is the top secret of an enterprise. Generally speaking, in the initial stage of the venture, the equity distribution is relatively clear and the structure is relatively simple, and several partners get the corresponding equity according to the amount of capital contribution. However, with the development of enterprises, various conflicts of interest will inevitably appear in distribution. Therefore, a reasonable ownership structure is the cornerstone of enterprise stability.