No, money didn’t matter much. You could have money and still do nothing with it. You needed connections and an ability to kombinować (untranslable word, but somenthing akin to hustle or hack).
Not saying here that rationing is bad by itself (I think people would starve or revolt otherwise). But that your „full stop” is not always true.
Also, during mask shortages and toilet paper shortages last year, in no country I think, money would help you much. I could pay $1000 for N95 back then (literally), and wasn’t able to find one.
Oh oh, and remember that scene in Titanic where a rich guy offers a pile of money to get on a life boat? :,)