There are waaay too many comments in here stating one way or another "this is a terrible comparison! it's nothing like this!"

A.) it's a webcomic, not a lawyers overview of the situation. B.) I think yall are missing out on the joke, which is not the metaphor with Instagram, it's the users reaction that is the punch line. C.) The take from the comic is, if you're not paying for it, don't call it a business, at least not a business where you are the customer.