I had exactly the same experience, and any hope of developing a business case went out the window when I realised I'd need a business case to justify the expens

I had exactly the same experience, and any hope of developing a business case went out the window when I realised I'd need a business case to justify the expense of developing a business case. In a desperate attempt to salvage the possibility of using the AI in any fashion I tried prompting GPT-3 to write the business case for itself, feeding it excerpts of several successful such documents of my own to set the tone and structure, at which point I ran out of credits. You can try doing the same on the cheap with AI Dungeon, but there's a fair chance it'll be overrun by vampires and mad scientists before the IRR-to-WACC ratio estimation section, rendering any such document fit only for mopping up after goblins. You feel a sudden pain in your chest.