If you have enough antibiotics, there won't be an incentive to do that because, when someone has an antibiotic resistant disease, that will just mean it's time

If you have enough antibiotics, there won't be an incentive to do that because, when someone has an antibiotic resistant disease, that will just mean it's time to shelve an old antibiotic and start using one that has been out of circulation for a while (e.g., no bribes/rouge labs required - just a call to the WHO). If you do not actually have enough antibiotics to cycle through, then yeah, it would not really work.