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Parfum Palace is a monument to AZ's descendants going to war and reaping stupid amounts of wealth in the aftermath. Whereas the Shabboneau Castle owners gave away their resources prior to their passing out of generousity. Lysandre makes a comparison later in the game, about Xerneas giving its life energy away VS Yveltal taking lives to sustain itself.
Moral of the story is don't be a speedreader.