I think that the NFPA will work with insurance underwriters, as they did many moons ago, and arrive at a workable plan in order to sustain the NEC and permit governmental units to position the NEC, and other codes, in their set of laws and regulations.
The NFPA will, in all probability, be obliged to relinquish the copyright in order to achieve this action. The insurance underwriters could lend a hand in code enforcement by declining coverage to unsafe installations. That would get attention in a rush.
Sam