Internet is more than DNS. DNS isn't limited ICANN's DNS
Use of ICANN root.zone is voluntary
I use a custom root.zone controlled by me, not ICANN
"The Internet" is controlled by telecoms. They own the networks and provide internet service
These are keys for "DNSSEC". DNSSEC does not encrypt DNS queries and responses. ICANN's "authority" to "approve" (registries and registrars offering) "domainnames" has no legal basis, compliance is voluntary