What you're describing there is a somewhat perverted version of "Lean" manufacturing. Example - there's a production line that's been running 20 years on a 198

What you're describing there is a somewhat perverted version of "Lean" manufacturing. Example - there's a production line that's been running 20 years on a 1980s computer. For continuity reasons, there are two spares in the warehouse. There hasn't been a failure in years, the spares are kept because finding replacements would be near-impossible. Some management consultant rides in screeching about how these two mission-critical systems are "sunk cost" and "need to be disposed of to make the place clean and tidy". So they are. Three weeks later, the primary fails and there are no spares...