What does a license have to do with anything? That doesn't mean the state owns the business. Unworthy? You apparently need to put words into people's mouths, that's the sign of a weak argument. You don't create second class citizens by turning down work, that's just bizarre!
A license means a business will follow the laws of the land.
A business that discriminates not only is breaking the law, but finding a customer unworthy due to some immutable factor. That's not fair. A business does not have the right to summarily dismiss paying customers if that customer is behaving properly.
Such discrimination makes that customer a second class citizen.