Unless you work for Microsoft, I don't think any of us can affirmatively state that only those impacted are a small minority. Regardless of the number, the fact that this is even happening - that machines get so corrupted that they cannot be serviced is inexcusable.
This should not be happening -at-all-. I see no root cause being found, I see no good solution.
On behalf of that small minority, do not discount their pain and the impact this has on their productivity please.