My understanding of a patent (in the US) is that it's only for new, novel concepts, often difficult to design or conceive.
Prior art, in this context, are just examples of this concept already in use or demonstrated. If there are already examples of the idea in use by others, then your idea isn't new (and therefore not patentable).
Learn something from this...?
To what end? For what point? There isn't an "undo" button on fascism.