The issue is that people constantly focus on and optimize for the happy path, but don't stop and think about what would happen if an adversary deliberately and

The issue is that people constantly focus on and optimize for the happy path, but don't stop and think about what would happen if an adversary deliberately and repeatedly triggered the worst case scenario. So many denial-of-service attacks (slowloris, query parameter hash collisions, etc.) come into fruition because bounded resource usage is an afterthought.