“Let them eat cake” was a stupid response (not from a king) to a minister who said that the peasants were out of bread. It had nothing to do with taxes. And yes, Louis XIV was not a very good king indeed.
Sorry about the spelling.
It was a sampling of how royal families react to their people in distress. You don’t think Buckingham Palace was built with 100% private funds nothing coming from taxation do you? The fact is through most of history the coffers or royalty and the coffers of the land they governed were the same, and primarily supported with taxation and profits from conquest (when conquest was profitable).
No good comes from making power venereally transferred.