I used to deliver for Dominos….
I used to deliver for Pizza Hut and it was a crap business. The “managers” made less than minimum wage on an hourly basis. Franchises can end up effectively being a way of letting the franchisor benefit from the practically-zero protections in place for the frachisees because they’re not employees – but the business model (ingredients, menu, promotion, operational decisions, premises decisions) is all determined by the franchisees.
If your guy somehow found a way to make a lot of money out of it that didn’t involve 18 hour days, 7 days a week, then fair enough. But if there were a ton of money in it, franchises wouldn’t be franchises, they’d be directly owned.