In many areas or cities of the United States, there will be multiple professional league teams coexisting. There are even two teams in every professional league in a metropolis like New York. If a city has two teams in the same league, such as the Los Angeles Clippers and the Lakers, they must compete on and off the court. With the arrival of Leonard and George, the clippers have the same competitive power as the Lakers for the first time, and the results on the court will certainly provide more ammunition for the off-site business development. The business development of North American professional sports league has reached a mature level, and the team’s performance on the field will hardly affect the team’s business development. When a team wants to move to another city, or when a city wants to add a new team, the league’s research and consideration of the local market is mainly from a commercial perspective. Teams in the same league are often far away from each other. The reason is that different teams don’t compete with each other in business (such as fans, sponsors, local TV, etc.). If the teams of major leagues in the same region exist at the same time, they must have commercial competition instead of performance competition. The commercial competition here mainly refers to the marketing budget of the sponsor. When a sponsor has a certain sponsorship budget, its investment considerations include not only the boss’s preferences, but also the return of team sponsorship to the brand, and the return on investment between different events is not the same. A sponsor is likely to choose only one team to sponsor rather than all local major league teams. In the C-end consumers, that is, fans, there is also a certain competition among major league teams. However, a Lakers fan can also be a ram team, but if the fan’s disposable income is limited, the ticket money can only be spent on watching one team’s game when he can only choose to watch one game.