I suspect that YouTube would much prefer to move away from being considered a video repository, and instead be considered a video feed. I don't know the figure

I suspect that YouTube would much prefer to move away from being considered a video repository, and instead be considered a video feed. I don't know the figure, but if I had to guess, I would wager that 95% of their views at any given time go to videos produced in the most recent month. Video is incredibly expensive to store, and almost all of what they're storing is basically sitting in a graveyard.