> With mixture of experts (MoE) models, I would think that Mistral might make a lot of money reselling specific models to big players like Microsoft and Google to augment their MoE systems

I am curious about what you mean by this. There is a (very understandable) common misconception about what "mixture of experts" means in current practice.

Mixtral is not a mixture of fully-separable domain experts, like one is an expert at programming and one is an expert at arts and literature. The "experts" are per-layer (and as far as I know, the subject of their "expertise" not even interpretable at this point).