When society expects systems to work 100% of the time and they work 98% of the time the end result is often worse than if society expected 95% success from a sy

When society expects systems to work 100% of the time and they work 98% of the time the end result is often worse than if society expected 95% success from a system that has exactly that reliability. Why? No mitigations/redundancy/workarounds and spoiled plans. Example. My last job had mostly automated provisioning process and you could not do anything for the first 3 days. My current job is at a smaller company that has manual provisioning and you can get started within first couple hours.