> Hulu with ads is for pay and really successful

At least two caveats to that, though:

1. A lot of the people on that tier probably got it for $0.99 a month or another promo deal that they've had. (They never have promo deals on the ad-free tier.)

2. Hulu started out without an ad-free tier and only later added one. There are probably still a decent amount of people who just never upgraded, but that doesn't necessarily mean they wouldn't have taken the ad-free version instead if it was available from the beginning. (There's a difference between deciding to pay more to not get ads when you had apparently already been okay with dealing with them vs. deciding to intentionally see ads in order to save a few bucks.)