I've been thinking the same since GPT3 too, and since ChatGPT, and since Claude and... But here I am, still paying for ChatGPT Pro because it's literally has the best model you can get access to for a fixed price each month, and none of the others so far come close. I still use Anthropic's and Google's models to compare/validate against, because I assumed at one point they'd surpass OpenAI, but so far they haven't. This all makes me believe less and less each day that it'll actually be commoditized.