It fairly accurately measured my age, location, place of birth and political inclinations based on our conversations alone. I am certain it can infer a lot more.
There is no other reason to require KYC for a server-side text transformation tool, no matter how impressive it is.
And another could be EU requirements for age verification. AI can produce adult content.
There are may be other reasons, like to prevent using OAI models' output to train competing models.
Because then the NSA shows up with an NSL, you integrate with the fascist surveillance state or you lose your business. How have people forgotten this so fucking quickly?
So I don't think implementation costs are an obstacle.