I don't think that will happen nearly as soon as there AI automation. Navigating intelligently through 3D space with arbitrary obstacles has always proven the more challenging of AI tasks.
Locomotion is not navigation, as you can see from the persistent failures of the self driving cars.
I don't know if you've ever organized a group of people... If you want everyone to be together and ready to go by 8:00am, you will have to tell them to be ready by 6:00am. Else you will be late waiting for someone. The consistently wrong estimates you point to are exactly that. Else they wouldn't be consistent.
Again, where you see failure, I see effective management practice. Why do you think that is?