I think that this is a really big deal for at least two reasons. A lot of people in large companies can't or won't use ChatGPT or Copilot because management is worried that their data and code will be used to train new versions of OpenAI's models. Also, although the pricing for ChatGPT Business isn't yet available, I'm guessing they will make orders of magnitude more money from enterprise customers than with ChatGPT Plus, which might make it possible for them to make GPT-4 tokens less expensive. The current cost of GPT-4 is what is limiting its massive adoption as I see it.