The work on the internet is on the internet freely available to all and the output of their API is the output of their API only available after registration and

The work on the internet is on the internet freely available to all and the output of their API is the output of their API only available after registration and agreeing to their terms and conditions. OpenAI are free to block anyone from using their API if they want. Just like anyone hosting their content a website is free to block the OpenAI web crawler.