No, you still need MORE redundancy. If 10 units is enough redundancy to deal with a failure rate of X, if X now increases then you will need more than 10 units for redundancy. The reasons don't matter at all. More chance of failure means more redundancy required.
I was being sarcastic near the end. That seems to be what the higher ups think. I definitely think there needs to be lots of redundancy, as someone who has been the recipient of a bunch of dumped on extra responsibility with little knowledge transfer as people have left.
