I've seen it done here in America so wouldn't be surprise if Asia does it too

[theking]

..Customer ate too much of the restaurant's profit  :

'I can eat a lot — is that a fault?': banned from buffet in China


Mr. Kang, was banned from the Handadi Seafood BBQ Buffet in Changsha, Hunan, for reportedly eating an excessive amount of the restaurant’s offerings.

According to BBC News, Mr. Kang managed to consume more than 3 pounds of pork trotters the first time around and over 7 pounds of prawns during his second visit.

"I can eat a lot — is that a fault?" he asked. The livestreamer explained that he did not waste any of the food. He also claimed that the buffet owner “discriminates” against his customers who eat a lot.

The restaurant owner stated: “Every time [Mr. Kang] comes here, I lose a few hundred yuan. Even when he drinks soy milk, he can drink 20 or 30 bottles. When he eats the pork trotters, he consumes the whole tray of them. And for prawns, usually people use tongs to pick them up, he uses a tray to take them all.”

China passed a law in 2020 preventing people from ordering too much food at restaurants and filming mukbangs at restaurants. President Xi Jinping stated food waste was a “distressing” issue that “threatened China’s food security.”