Besides, it’s not like TVs are the only industry where consumer choice is an illusion. You see the same problem in a lot of sports (I used to fence and there was a great deal of pressure to buy equipment from one specific manufacturer which charged literally 4x the price for their gear).
And it’s not just hobbies either. I need a car for family duties and there are plenty of parts on it that can only be replaced by an authorised dealer.