I’m not aware of any HD maps built entirely automatically. As soon as manual steps creep in, the cost skyrockets. The backhaul and processing power required for updates can also be staggering.
If amortized cost of hardware + backhaul & processing costs < professional driver wages, then the model works. This is especially true as tech improves and wages increase. There will be a crossover eventually.
I would also point out that there are 2M truck drivers earning $47k per year [1]. That's $94B annually in pure labor cost, and doesn't even account for rideshare & taxis.
[1] https://www.bls.gov/ooh/transportation-and-material-moving/h...
That's way less intensive than having to build the whole thing from scratch or having it be fully automated.
Humans are good at exceptions. Let the humans do that while the machines do the rote task of "Yep, road still looks like the map. Nothing to see here."
[0] https://www.businessinsider.com/apple-has-7000-fewer-people-...