For example, I’d like to know what is this “NIN example”. I never heard of that “well known brand”, and wikipedia seems to refer to a rock band … or a National Identification Number ?

I also fully concur with the fact that advertising is only one of the component of the business model. Subscription is the obvious other one, and “Hosting” (the content provider pays for the service) is also very successful for some niche content. Note that the latter could also be used for “Live” TV.