Longshoremen and stevedores unions would kill off an automated port in no time. You’d find that it needed more environmental review or something.
You might want to have a word with ECT terminal, The Harbour of Rotterdam and I guess the FNV labour union while you're at it?
(this is just one terminal at one of the world's largest and busiest ports. A quick google seems to indicate that the workers would be with FNV.)
TIL there's actually a newer terminal with even more automation at the same harbour:
And even more specifically, California.