Have you a source for the "so much money prescribing Ivermectin and hydroxychloroquine" that one may compared that "much" to the profits of the mRNA manufacturers?
It would be an interesting comparison.
The numerator is smaller, you’re correct, but the denominator is far smaller. The Ivermectin prescribing game has been conducted by a small number of internet doctors and a small number of internet pharmacies, and they have made -as individuals - tens of millions of dollars by promulgating false or discredited studies to gullible fools. Look up Ravkoo pharmacy for example, a failing business that became suddenly profitable by selling this snake oil.