Who said that the buffet won't lose money? Now many small self-service restaurants operate at a loss. Except for a few chain cafeterias with good reputation, many others are also struggling to support.
For example, in some large five-star hotels, the daily food cost rate has reached more than 61% due to the lack of scattered customers. If you count the labor cost and utilities, you will not make any money, but just enliven your popularity and use it as a hotel accessory for in-house guests.