Maybe, but it would take massive amounts of buy in and (likely) money. There are some protocol hooks that could make it possible, but the current set of systems

Maybe, but it would take massive amounts of buy in and (likely) money. There are some protocol hooks that could make it possible, but the current set of systems are optimized for one address allocation. It would be prohibitively expensive to either have a parallel transit network, or reengineer routers to manage multiple, parallel routing tables. It's the social buy-in that the show stopper. There has been multiple DNS replacements, but none gained critical mass enough to get deployed on a large scale. It was never seen as worth the cost to migrate to a new naming system.