I think there's a way in which ChatGPT is paying this, by having released GPT-3.5, rather than just waiting 6 months and releasing it with GPT-4 out of the gate

I think there's a way in which ChatGPT is paying this, by having released GPT-3.5, rather than just waiting 6 months and releasing it with GPT-4 out of the gate. In this thread everyone is making a clear distinction, but in a lot of other contexts it ends up quite confused: people don't realize how much better GPT-4 is.