Why are you framing this as being primarily about Google being un-sueable? There's clearly a problem with Google being difficult to work with to re-claim ownership of a business profile (no customer support, as always) and Google obviously has deep pockets that would be tempting to get access to, but isn't Lieferando the one engaged in the extortionate business practices?
Under US law I can see a few different things that would make the Lieferando behavior you describe illegal, whereas all Google is doing is being the unwitting vector for their illegal activity.
It's always more difficult to pin fault for a crime on unwitting enablers even when their negligence arguably rises to the level of a crime. The big question here is why businesses haven't successfully fought back against the ones doing the actual crime?
Under US law I can see a few different things that would make the Lieferando behavior you describe illegal, whereas all Google is doing is being the unwitting vector for their illegal activity.
It's always more difficult to pin fault for a crime on unwitting enablers even when their negligence arguably rises to the level of a crime. The big question here is why businesses haven't successfully fought back against the ones doing the actual crime?