And though they don't appear to be huge revenue contributors at this point, the YouTube Red and YouTube TV subscription services can't be overlooked when trying to value the company. Particularly YouTube Red, which provides ad-free YouTube, some original shows and access to the Google Play Music service for $10 per month, and which led YouTube to become the top-grossing U.S. iPhone app in March. Later this year, Google plans to replace Google Play Music -- in many ways Red's weak link -- with YouTube Remix, a music service that's fully integrated with YouTube.
Of course, YouTube is funded by advertisers. So it makes sense to pay attention to their wants and desires. But under the current model, brands’ reactions are often a placeholder for third party regulation. And at the moment – as content creators are sketching the line for appropriate content – it is often advertisers who have the final say about acceptability.
YouTube earns advertising revenue from Google AdSense, a program which targets ads according to site content and audience. The vast majority of its videos are free to view, but there are exceptions, including subscription-based premium channels, film rentals, as well as YouTube Premium, a subscription service offering ad-free access to the website and access to exclusive content made in partnership with existing users.