After the Persian War, Greek city states were giving money to Athens to help provide for the common defense. Athens used that to build up a huge army and eventu

After the Persian War, Greek city states were giving money to Athens to help provide for the common defense. Athens used that to build up a huge army and eventually starting making more demands of the other city-states. This led to the Peloponnesian War where Athens used the resources that were supposed to be used to defend Greece for a different purpose--to try to take over the rest of Greece. So at least during the period after the Persian War and through the Peloponnesian War the article is missing the fact that most of the money flowing into the Athen's military wasn't coming from Athenians (rich or poor). They were getting it from other cities, first voluntarily and eventually through tribute.