> Will Google start deleting YouTube content that is super long tail and unviewed?
Well they added this to their ToS about a year ago:
> Terminations by YouTube for Service Changes
> YouTube may terminate your access, or your Google account’s access to all or part of the Service if YouTube believes, in its sole discretion, that provision of the Service to you is no longer commercially viable.
(https://news.ycombinator.com/item?id=21503851 for discussion)