Now though, it seems that the test is going full-scale. In a statement to The Verge, a representative confirmed the company was launching "a global effort" to put a stop to users skirting ads through outside programs.
"The use of ad blockers," the statement read, "violates YouTube's Terms of Service. We've launched a global effort to urge viewers with ad blockers enabled to allow ads on YouTube or try YouTube Premium for an ad-free experience." The statement went on to say that ads on the site "support a diverse ecosystem of creators globally and allow billions to access their favorite content on YouTube."
A link in that statement leads to a YouTube support page with instructions on how to allow YouTube ads on popular ad-blocking programs, including AdBlock Plus and UBlock.
To test this myself, I headed to YouTube and clicked on a video with my ad-blocker enabled. I was indeed greeted with that message with no way to close it. When I disabled the blocker, the video played as usual.
So what are the options? You could pay up for YouTube Premium at $13.99 a month for Android users and $18.99 for iOS users or sit through some advertisements. You can save a little by paying for a year at once ($120 for Android or $140 for iOS), but that's now your only way to bypass commercials on YouTube.