> If domain names had been freeform from the start...

I'd argue that they're not freeform now. You need to pay ICANN something like 250k USD to consider your application for a new TLD, plus I think you need to convince them that you actually can operate the infrastructure required to reliably serve queries and subdomain registrations for that TLD.

I do agree that we have _way_ more TLDs now than the five or ten we had back in the 1990s, but the barrier to creating a new one is so large that I'd not describe them as "freeform".