I didn't even realise until recently that the football channel I run as a supporters channel for Middlesbrough FC (https://www.youtube.com/channel/UCUBeLtOQPxs9waFllPjjNjQ/) reached 4000 thanks to one video. This has prompted me to start making more content for it because if I build up a large audience, although I can't directly monetise these videos due to copyrighted content, I can redirect viewership to my other channels and find alternate ways to monetise. 
