[tialaramex]

Tor doesn't pay ICANN $185k per year for .onion

A single TLD could reasonably be added to IANA's registry of special suffixes, since it wouldn't be part of the DNS hierarchy that ICANN is responsible for they'd have no claim on $185k or any other amount of money.

But a parallel hierarchy is never going to get that, so basically this choice ensures an up-hill battle, presumably mostly so that like other parallel hierarchies its proponents can make hollow claims about "owning" names that actually are meaningless, it's like buying land claims on Mars.