Parenting is already so expensive, we don’t want people to buy what they don’t need. Milk protein is already in formula or yogurt, and wheat is in baby cereal. Both yogurt and baby cereal make great mixers for other proteins!
We also don’t have a fish / shellfish powder. The science that this is helpful, or which fish / shellfish to use is currently not ready. We’ll get there when we can be sure we are giving parents the best.