No one I have ever tried to explain this to paid the slightest attention--but here I go again. The idea at the end of Laws of Shemita that, "when one who accepts on himself the yoke of Torah, the yoke of work is taken from him. " does not mean to make money by means of using Torah. It means that in some way God will provide. It is not a "heter" [license] to make Torah into a business.