OOC:That would be impossible... unless Athens manages to screw up even worst.
I don't know, the situation at the time was quite confusing. Athens had been sacked and burned by Sparta after the disastrous attempt to land troops in the Peloponnese in 405 BC. Maybe Sparta isn't so motivated if Athens hadn't fruitlessly burned the farmland around them.
The rising power of Macedonia in the north proved quite a challenege for Greece in the 4th century BC. It was only because of the death of Philip II in Thessaly in 353 BC that the Greek cities were able to cobble together s forec that could resist the Macedonians.
Then there's the fact that Piraeas became a powerful city in it's own right, occasinally enough at times to keep Corinth's influence out.