This orthogonally reminds me of the time when there was a massive kerfuffle when Google registered .dev and then included the entire gTLD in Chrome manifests as

This orthogonally reminds me of the time when there was a massive kerfuffle when Google registered .dev and then included the entire gTLD in Chrome manifests as HSTS [HTTP-Strict-Transport-Security] required (HTTPS only) and that silently broke a lot of company's LANs and developer environments. (To be fair, don't use gTLDs that don't exist in your LANs, that was always a broken thing to do, Google just made it more obvious in that case.) Google has made some interesting choices in the sorts of gTLDs it has registered since it has had the capability to do so.