I'm not so sure. There's at least three major ones (Netflix, Amazon & Disney+) plus a bunch of minor ones that are trying to keep exclusivity. So the competition will keep the prices relatively sane, hopefully.
Unless they want to move it so that people only have one subscription, but at this point I don't see how that can happen because they each offer different things. So people will either chop & change (ie pay for one for six months then move to a different one to get their content for a bit etc) because there'll be a max they'll be willing to pay.
Unless you know they form a monopoly in which all bets are off.
