Exactly. Given how expensive content is to license/produce, their goal is not to have tons of stuff you want to watch right now. They want to have just enough stuff that you don't leave (either because of the current catalog, or because a new season of HoC or something else you care about is around the corner).
They structure their site so that you don't realize that they don't want to make you super happy—they just want to keep you barely happy.
Sad, given it was once the prime example of "long-tail" content providers - giving customers the hope that everything would be available eventually, no matter how obscure.
Now I'm resigned to them providing "more than I'd like to watch than I have time for", and expecting to go elsewhere for "I want to watch this, now who has it" content.
They structure their site so that you don't realize that they don't want to make you super happy—they just want to keep you barely happy.