My question is why can’t the process be automated? Just make the whole thing behave like a cache with LRU eviction.
I`ve personally seen a Fortune 500`s informal wiki/support infrastructure and knowledge consolidation is not as black and white as FIFO or GIGO (it was nonexistent aamaf).
Its rare to find an F500 company that has big data analysts working front-line roles to even get a grasp on a consolidation strategy, but shareholders can dream.
This works because the kids having one specific toy probably doesn't matter.
However, having one specific wiki page might matter quite a bit.
For example, how often do you perform emergency procedures? Is it often enough that you're going to edit the various emergency procedure pages in your wiki often enough to keep them from the chopping block? How about pages about things which aren't emergencies, but which are involved and delicate and require non-obvious knowledge? Again, how often will you edit those pages? Will you remember all of these vital pages every time the man comes around? Forget one and... You're on the hook for suddenly remembering everything which got deleted a few cycles ago.