Go out on the the street of Anytown in any western country, and people know "ChatGPT".
A friend of mine is a teacher, and told me that at a recent school board meeting there was discussion about implementing AI into the learning curriculum. And to the board, "AI" and "ChatGPT" were used interchangeably. There was no discussion of other providers or models, because "AI" is "ChatGPT".
That's why OpenAI has these huge projections. When average people are asked to reach for AI, they reach for ChatGPT.