8. Bullshit. Pressure on the franchise sends a message.
The franchisee sends a significant part of his/her income back to Corporate for the privilege of being associated with the national brand. When the brand becomes poison, the franchisees can actually sue the corporation for it's actions because it cost them their livelihood. PJ's taught all these guys how to make pizza and run a pizza joint...they can leave and start their own local joints. Maybe. I'd guess they have non-compete clauses. But I'd also guess there are clauses about the responsibility of the corporation to maintain a positive brand identity.