Just as pharmacists refusign to do their jobs woudl result in openings. But if done en masse, the disruption coudl be... entertaining.
It would be especially entertaining to see a class-action lawsuit brought against the masses of fired pharmacists.
It is possible that edicts like the governor's could lead to the formation of specifically Catholic/Christian - or perhaps even Islamic - pharmacies. If the market would support these enterprises, the governor might be providing an indirect incentive for the formation of small businesses and a reversal of the trend towards mega-pharmacies.