Calling interest the price of providing credit has long been systematic. No longer calling the return on savings in capital this way is more recent and not yet systematic in economic theory. However, the clear distinction between credit and interest on the one hand, and capital and profit on the other, leads to the possibility of a general adjustment of interest rates which is most favorable to employment.
By prioritizing rates of profit on capital over interest rates as directors, this approach curbs the excessive financialization that breeds enrichment through surplus values. Consequently, it provides the market economy with a degree of systemic stability and clarity that is currently lacking — a fact evidenced by the recurrence of major financial crises.