[The Conservatives' Industry Act contains] the most comprehensive armoury of government control that has ever been assembled for use over private industry, far exceeding all the powers thought necessary by the last Labour government...Heath has performed a very important historical role in preparing for the fundamental and irreversible transfer in the balance of power and wealth which has to take place...The whole nature of the mixed economy operating on market forces has been transformed by this quiet revolution in a way that is not yet fully appreciated.