Basically the principles of JustInTime inventory management system applied to ICU. England optimized bed usage to be around 95%, to reduce the cost associated with empty beds.
How could anyone argue that once in a while there won't be enough beds to save everyone's life?
The closest things I can think of non healthcare is that airbags are designed for 5, 50, and somewhat for 95%ile individuals. But I think it's actually impossible to develop for everyone due to mechanical restrictions.