> Since profits are a portion of the value generated by labour That's simply not true. Profits = revenue - costs. Revenue, what buyers pay, is based on perce

> Since profits are a portion of the value generated by labour That's simply not true. Profits = revenue - costs. Revenue, what buyers pay, is based on perceived value. That perceived value may come from labor, but it can also come from some mechanical transformation (ie automation). It can even come from something else, such as color. (I'm assuming that red paint costs the same as blue and takes no more labor to apply.)