Yes about commodities, but what you said about surplus is actually wrong. Consumer surplus is at a maximum when there is no differentiation. That is because when producers struggle to differentiate amongst competition, they must compete fiercely on price, so customers often pay far less than their maximum willingness to pay.

And arguably your own statement here doesn't help the view that the industry is not a bubble, as one could argue most LLM models are not substantially different from each other, and most products integrating them are offering similar features. The industry may need to do better at differentiating if it wants to avoid being commodified.