I am not sure that this example really works. Youtube is happy to give you all the "free lemonade" you want (from videos that aren't really monetizable) but the ones that are, they make onerous to use. I get 20+ ads per day right now from an Internet service that I already use, and get untold ads from products that I would never use. Some of the ads are up to 1 hour in duration. Granted, they mercifully offer a skip button, but it seems to me that the ad is being forced on you, not offered to you. That is the big difference. A funny, engaging ad is not a problem for nearly anyone.