Similar to what Facebook and Twitter did, just clone popular projects built using the API and build it directly into the product while restricting the API over time. Anybody using OpenAI APIs is basically just paying to do product research for OpenAI at this point. This type of move does give OpenAI competitors a chance if they provide a similar quality base model and don't actively compete with their users, this might be Google's best option rather than trying to compete with ChatGPT directly. No major companies are going to want to provide OpenAI more data to eat their own lunch