Or they can not treat the patients, and the bacterial infections grow stronger and get spread to the community requiring more and more antibiotics to be used.
I say resistance is caused by underuse of antibiotics. Use antibiotics and kill the infections. Culture and make sure the antibiotics are effective for the bug you are treating. (Remember when that was routine?) Quarantine serious infections and use good hygiene and good ventilation systems and you won’t have to worry about resistance.
I think we had better luck with witch doctors and medicine-men.