In flight entertainment on United does the same thing. I practically have the barracuda networks pre-roll memorized by now. But if it helps United provide more content without raising prices, then I am ok enduring a 30 second ad. Content costs money — either the consumer pays directly or an advertiser pays. But people don’t make movies for free — at least not if they want to continue making movies.

Also, ads in YouTube — the content creator enables that so they can get paid.