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.
Profit is good, if you are in the business of producing a good or distributing a good to the intended customer, that is, if you are a manufacturer or part of the normal retail chain.
Profit is not good, if your business is basically black marketing. That is, removing a product from its normal retail chain just so that you create a shortage and then sell with a profit due to the shortage created by you.
And with medical supplies, we need to make sure that all those, who are in desperate need, get the needed supplies.