That's a hard game to win in the end. Odds are the new and improved name services you're required to use won't really look much like DNS today.
Initially they'll be implemented as DNS over HTTPS, with devices being shipped preconfigured to favor those HTTPS endpoints over name servers provided by the local network. From there the traditional DNS bits will eventually be removed in favor of whatever proprietary mechanisms defined by Google/Amazon/Apple.
The only way to use Google/Amazon/Apple services will be by bootstrapping from hardcoded list of bootstrap ips in their product, secured by a similarly hardcoded CA certificate.
Initially they'll be implemented as DNS over HTTPS, with devices being shipped preconfigured to favor those HTTPS endpoints over name servers provided by the local network. From there the traditional DNS bits will eventually be removed in favor of whatever proprietary mechanisms defined by Google/Amazon/Apple.
The only way to use Google/Amazon/Apple services will be by bootstrapping from hardcoded list of bootstrap ips in their product, secured by a similarly hardcoded CA certificate.