only the irretrievably cynical could imagine that it's solely about money. It's more about intangibles such as
clinging to a narrative that the other side won't believe
The great majority of Poles feel no collective guilt about the holocaust, that (pretty justifiable) position that enrages some (not all) Jews and some others.
I'm not against all claims but they need to be made by the victimized (or their direct descendents) and should not necessarily involve the return of the property itself (. If the original building was destroyed in the war the claimants should have no right to what was built on it after the war.