Is there any reason we can't create a new root. Then have lookup servers who have both roots. So the lookup server sees 'example.com' and checks ExampleNIC. Ex

Is there any reason we can't create a new root. Then have lookup servers who have both roots. So the lookup server sees 'example.com' and checks ExampleNIC. ExampleNIC doesn't have 'example.com' and so the lookup server checks ICANN Root. If the lookup server gets 'example.other' it checks ExampleNIC and continues. This should be able to scale to a large number of alternative roots. If you move between root domains you will have to get new domain names but no one power controls the DNS system.