If you're OpenAI, you couldn't really care less about it, I suppose, because people need you to run those prompts, they're not easily transferred between models if I understand correctly.
But if you're an OpenAI-API-Reseller and your value proposition is prepending a prompt to whatever input you're given, that's very much a concern, because people can easily cut out the middle man if they have the prompt. The SaaS boom has happened for the same reason, hasn't it? If you deliver a software / library, people can look at it and replace you. If all you provide an API where nobody can "view source", they can't, and you can forever collect rent.
But if you're an OpenAI-API-Reseller and your value proposition is prepending a prompt to whatever input you're given, that's very much a concern, because people can easily cut out the middle man if they have the prompt. The SaaS boom has happened for the same reason, hasn't it? If you deliver a software / library, people can look at it and replace you. If all you provide an API where nobody can "view source", they can't, and you can forever collect rent.