You, as an individual, buy enough of their stuff to support them month-to-month? How generous of you.
Now that the snark is out of the way: Clearly an individual doesn’t make enough money to do that, and if you’re the only new fan they gain that’s still nowhere near enough to make a living.
You could have responded without being an asshole. If we had discussed this politely we probably could have reached an acceptable middle ground and both learned something from the other person’s experiences and ideas.
You’re coming out here arguing in favor of a megacorporation keeping even more money for itself instead of artists getting paid for their work. I feel like you should have expected to have upset people.