Commoditizing means that each offering is effectively the same as others and there is no differentiation.
Intelligence is much less commodity than storage.
The leading LLMs all have some distinctive differentiation and abilities.
Models aren't interchangeable, and there is a diversity of ones with different strengths... but there's no one provider that's obviously better than all the others.
Most importantly, there is a healthy and competitive race between a non-trivial number of powerful LLMs, which prevents any of the model providers from trying to flex their muscle too much.