Most services exist to ameliorate a want. That is to reduce misery. Your statement basically means people shouldn’t profit. But if they shouldn’t profit what incentive will they have to reduce misery? It seems clear to me that if anyone is guilty of profiting from misery it is doctors, whose high salaries are inexcusably tied to misery. Truly, they should donate their time and live in a tent outside the hospitals they work at, and accept only kitchen scraps for compensation.