As an example: grammarly is a company that makes money off getting users to "correct use of language". They make millions per year and this is just one use case of ChatGPT. Other use cases: copilot , AI personal assistant/scheduler, research summarizer (ex: Ought). Each of these is a multi million dollar business at worst.

Let's not forget that this is iteration 1 of the technology. It is only going to get better and better. The fact that it can already do all these independent tasks without having seen additional data for the task is a complete game changer.