These "bloated" packages exist specifically to force you into buying more than you need. It's a standard monopoly pricing technique, and the presence of bundled packages indicates monopoly power in the market.
i am not sure that it is directly tied to monopoly. paying for a subscription reduces friction for watching individual shows/channels so it increased total viewership and total consumption. every pay point you add adds more friction so will reduce consumption. that is true whether you have monopolies or not. you could have 5 competitors and they would all maximize profit by selling bundles.