Even if that's true we don't all benefit from it equally, or in the same ways. An artist whose work was used without compensation for training data and who now can't find paid work benefits how? Just in the same vague general sense that we all do? That hardly seems honest.

But hey if it is true then we can nationalize it. If it's built on our collective labor and applied to our collective benefit then there is no justification for letting the profits accumulate to a few companies and their investors.