I have experimented with GNS. While DNS is designed to be a tree/hierarchy of zones, GNS appears to be a web of zones with no real notion of a root zone. ICANN-provided zones will at best be just a bootstrap zone - not a root zone. Globally unique names don't seem to be a goal at all.
The issue is going to be how to communicate a domain name that resolves identically between sender and receiver. Some sort of relative domain naming will have to be implemented. Perhaps sub domains may have to be resolved against the zone used to access the original information. Or, the address may also specifies the zone pkey against which names have to be resolved. If this could be resolved, the Zooko's triangle may finally be completed, without the need for globally unique names.
The issue is going to be how to communicate a domain name that resolves identically between sender and receiver. Some sort of relative domain naming will have to be implemented. Perhaps sub domains may have to be resolved against the zone used to access the original information. Or, the address may also specifies the zone pkey against which names have to be resolved. If this could be resolved, the Zooko's triangle may finally be completed, without the need for globally unique names.