Developers

There's entire YouTube channels dedicated to teaching business owners how to get bad reviews on Google Maps removed

And apparently entire tools made by Google to help you remove them!

¿A qué, pues, haréis semejante a Dios, o qué imagen le compondréis?
Isaías 40:18.
¿A qué, pues, me haréis semejante o me compararéis? dice el Santo.
Isaías 40:2

In Germany you can buy a reviews removal service:

A lawyer sends customers an email claiming they never been to the place, remove it now or we’ll sue you.

Customers don’t want trouble and remove (or can’t prove cause they dont keep receipts from every falafel place they go to)