See what the world would be like if everything was bundled like cable channels. (Spoiler alert: It'd be awful.)
Cable works like this because that's how cable works.
This video from Funny or Die, featuring David Koechner (a.k.a. that guy from that thing), does a pretty good job of highlighting the absurdity of cable companies' policy of channel-bundling. It's pretty short, quite funny and rather illustrative.
Unfortunately for you, it happens to be bundled with this 48-minute lecture on misconceptions in aerodynamics from the University of Michigan. If you start watching now, you'll be able to close the tab on this post in a little less than an hour. Enjoy!