Gwern points out that "prompt engineering" is very important in GPT-3 (https://www.gwern.net/GPT-3#prompts-as-programming), and it's entirely possible that will be more pronounced in GPT-4.

If that's the case, there's an obvious moat (perhaps not an incredibly deep one) in being better at prompt engineering than your competitors, dedicating R&D effort to discovering new prompt engineering tricks/principles, etc.

I could see this as being kind of like an advanced form of SEO.