[schanzen]

There are a lot of stakeholders involved and a lot of applications relying on DNS may have problems (browsers). So the migration path is long and winded I guess.

Other than that, no. GNS itself could also be realised on top of other DHTs, such as libp2p/IPFS (before anyone mentioned the, eh, maturity issues of the reference implementation in GNUnet.)

[pessimizer]

You can't shim GNS into looking like DNS to the OS?

[schanzen]

You can. Either using nsswitch plugins or a local DNS service that resolved the names in GNS. But, browsers are delicate when it comes to TLS certificates, for example. See also https://www.ietf.org/archive/id/draft-schanzen-gns-19.html#n...