Maybe this is the people telling the other competitors to fuck off with their own streaming services. Maybe they think staying loyal to just one of them, things can go back to resemble how it was +5 years ago.
Oh, well. In general, I agree, but there must be examples that don't fit with your statement. In the end, companies pursue profit, ideally, offering a better service gives you exactly that. I know this rarely is the case, but it can happen.