Is it realistic for travel shopping groups organized by travel agencies to be free of air tickets?

In recent years, "zero-negative group fee" tourism has been an abnormal phenomenon in tourism, but it has always existed, especially in Yunnan, Hainan, Beijing and other places. A travel agent in Beijing bluntly said that taking Yunnan as an example, many shopping spots in Yunnan are jade shops, and the prices of goods are high, and the tour guides get a lot of kickbacks, so the tour guides are naturally willing to pay for the tour groups out of their own pockets. In addition, in order to fundamentally prevent tourists from the same starting point from rushing to buy things, more and more tour groups "fight" after arriving in Yunnan, because tourists from all over the world don't know each other, and even if some people don't want to buy, they can't "collude". As long as someone buys it, the tour guide will make money.