>>354299The rightoids who think "Marx believed in LTV therefore Capital is wrong because haw haw labor isn't valuable". The whole point is to look at what it would actually mean if labor-power is commodified, to conclude that this arrangement is terrible and rife with contradictions. The reality of wage labor is that it means, very directly, that industrial workers are disciplined by the market, and the bourgeois economists in Marx's time were well aware that labor was very valuable and necessary, hence why it had to be disciplined.
The neoclassical theory is moving away from that stage of capitalism, and moving towards monopoly capitalism and oligarchy. Their answer to classical political economy is "no shit, we want to rule like kings", and they moved steadily towards a more ecological view of value, one befitting an oligarchy of capital that sought to roll back all this talk about commoners having rights at all.