I like it, but what if we train a neural network that remembers all the data in its weights? My sense is that these companies are using large (deep neural netwo

I like it, but what if we train a neural network that remembers all the data in its weights? My sense is that these companies are using large (deep neural network) models to make their recommendation systems work. We can't ask the neural network to selectively forget a person, at least to my ability.