That the market actually responds to consumer desires.
Unfortunately with the excessively oversized conglomerates that do vertical integration in an ever increasing number of industries, there is only the illusion of choice left for consumers. Not using any type of media (books, movies, etc.) is not actually a solution or a choice. So consumers are left with no choice but what is offered, and the offering is not dictated by their desires but by the companies who will screw you over to increase already obscene profits. The "vote with your wallet" argument you use leaves you with "pile of crap A" and "pile of crap B" to choose from, with no alternatives. Your solution is social disconnect from everything and everyone, that is not actually a solution or a real viable choice.
I'm not talkong about streaming services in an isolated case, I'm talking about the entire company behind it. It only makes sense to evaluate them as a whole and not their subcategories in isolation from the rest of their company.
Paramount, Disney and HBO are profiting in the billions.