The thing is: its rarely constant rate anywhere. A short outage can snowball very easily in a lot of lost time. What I learned when working with enterprises is

The thing is: its rarely constant rate anywhere. A short outage can snowball very easily in a lot of lost time. What I learned when working with enterprises is that above all they value reliability. This is for a reason. A short outage might at best trigger loads of paperwork for multiple hierarchies, big meetings etc. The org has no choice. It needs to evaluate if whatever happens is a threat to their business. In the worst case it is that, plus missing some crucial windows of delivery. This is because a system that is unavailable for a short time can cause backlogs that, like traffic jams, cascade as everyone has to slow down and then synchronously speed up again. Orgs have the option to create more resilience, but that is overhead similar to compliance. You need to drill all your backup plans all the time, otherwise they are worthless. The drills cost time and money. At scale it is infeasible to be robust to all failures. Therefore, enterprises (at least) often prefer reliable systems over sophisticated systems. Because this delegates the risk management to the vendors rather than adding an overhead to every employee. Because at some point the employee would just do drills all the time instead of work.