Is it better for managers to be promoted from within or recruited from outside? Please explain the reason. Are you in favor of open competition?

Every sustainable enterprise has values, practices, systems and methods formed in the process of sustainable management, which we call corporate culture. Compared with external enterprise managers, managers promoted from within the enterprise can often inherit and implement these cultures better, while externally recruited managers are superior to internally promoted enterprise managers in general management methods or innovations. There are good and bad corporate cultures. A good corporate culture helps to form the core competitiveness of an enterprise, while a bad corporate culture often hinders change and reduces the efficiency of an enterprise. Therefore, we can't generally say that it's better to push inside or recruit outside. There are many outstanding managers emerging from internal promotion in excellent enterprises, who can help enterprises gain sustainable competitive advantage by inheriting good corporate culture, such as Toyoda Shoichiro of Toyota Company; There are also excellent managers hired from outside to break the bad corporate culture of the original enterprise and save the enterprise from danger, such as Guo Shina of IBM. Therefore, understanding corporate culture is the starting point of analysis. Now a better enterprise will have a successor plan, and the former enterprise manager will train the successor enterprise manager in the enterprise purpose, business philosophy and business methods to ensure that the successor enterprise manager will not violate the previous strategic concept of the enterprise without authorization, leading to the failure of the enterprise. Open competition is necessary, which can help enterprises get fresh blood and bring new ideas and methods, but any enterprise with excellent genes must graft the fresh ideas and methods obtained in open competition into the original corporate culture, so as not to let things that are too novel easily change the original intention of the enterprise. A little humble opinion, I hope to attract more attention.