A good business model, people will certainly imitate it. You have to implement it quickly and make it bigger, so that people can't surpass you; Once you want to surpass it, you have to have a new business model to deal with it, that is, the phrase "has been imitated and never surpassed."
The same is true abroad. Who says there are no imitators abroad? Nokia has been imitated and surpassed, and now it has become a third-rate manufacturer and has been acquired.