The ramp time problem
A new CoS - even a good one - spends the first two months learning the org chart and the obvious things. The next two months learning the non-obvious things. The last two months starting to apply judgment reliably.
After six months, they still don't know your history with Acme Corp from three years ago. They don't know that you always approve hotel upgrades for red-eye travel but not for overnight trips. They don't know that this particular vendor has burned you before. They have to ask.
DelegateZero starts with whatever context you load on day one. If you've documented your policies, added your precedents, and populated your entity data, it applies that from the first request. It doesn't ramp up - it uses what's there, and asks when something's missing.
More importantly: it shows you its work. Every decision comes with the reasoning. You know exactly what it applied and what it missed. You can correct it in 30 seconds and the correction propagates immediately.