For everyone?

What do you mean by "everyone?" Do you include the floor workers who are paid so little that they need food stamps? How are they benefitting?

Would they be better off if the managers were worse paid?

I can't help but notice that you shifted the goalpost subtly from "better for everyone" to "not worse for everyone" there.

If the pie was shared more fairly, then yes they would be better off and I daresay that their incentives would be better aligned with getting those numbers up. And yes, that would mean managers not pulling down millions.

FWIW I've seen managers burn down stores by pushing their employees to far in chase of those numbers.

Perhaps it can work situationally, but I've not seen it anywhere I or any of my friends have worked.

Managers burning out people chasing KPIs and promotions of their own careers, isn't anything new or exclusive to Walmart. I've seen it in every tech company I've ever worked at.

Then why on earth did you suggest it was good for everyone?

Slipped my mind.

If the manager burns the store down, wouldn't his KPI plummet and he get the boot eventually?

eventually... the delay between manager doing stupid action chasing KPI and store burning down may be large enough that the average manager is likely to burn the store down.

If your goal is long-term success, those incentives might be misaligned.