wowee this is interesting. I suspect the ring will be OP and with some threats to the life of a few nobles, they wont have a choice but to let him join. He could start over with some other business, but I don't think things would change, they would still arrest or kill him even outside the city. I suspect he will either fight them with magic or some noble will stand behind him for a stake in his company. Nobles like money after all, and a smart one would recognize that he might have more business ideas. If his businesses can take over more things then that is more money for whoever invested in him.