Exactly. Nothing is really preventing a $200/month aggregator beyond paying a bunch of lawyers and people not wanting to pay that. I know I'll live with some service fragmentation in exchange for not paying for a bunch of stuff I'll maybe watch once in a blue moon. And I'll probably buy some discs for things I really want to see.
Exclusive deals are preventing it. Media content is resistant to commodification, making it a durable value proposition, and this makes exclusive licensing deals highly desirable - lawyers hired by an upstart aren't going to make a dent in this.