Why does Treasure Bus always recruit drivers?

The income is too low. Judging from the query results, Zhenbao Bus is a privately contracted bus operation group, so its income is lower than that of the bus group, and it is more difficult to recruit employees, so it will often recruit drivers. Guangzhou Zhenbao Bus Co., Ltd. was established on June 28th, 1995, located in Daguan North Road, Guangzhou Economic and Technological Development Zone.