The problem is that with how these companies are set up, if the humans are doing the work well they're basically doing it in spite of the company. Left to their own judgement, vanishingly few humans are going to (leave a package that's actively leaking oil paint; have a local terminal that can never be reached; leave packages down by the road instead of delivering them; falsely mark packages as delivered and then do it surreptitiously the next day). But the systems that command them highly incentivize such behavior in the name of never-ending "optimization" (aka corporate looting).
