[encryptluks2]

Because otherwise the only solution is increased fees and the continuance of domain squatters. Why is having a company include a domain and PIN ID such a bad idea? If you want to use only the ICANN approved domains, then there could be a subscription service that you apply that uses only the ICANN approved PINs.

[ohashi]

Extensions are basically the PINs you're talking about. Your idea is basically making everything in existence currently a subdomain and a new super TLD which would be the PIN. Which would break nearly all existing infrastructure, render trillions of dollars of marketing and consumer understanding useless and for what? To let you get a better domain name? Because... you can't afford the one you want? The idea is simply stupid from every angle possible.