I think it's possible. You simply don't have the Roman conquest. For the most part, Athens was an autonomous and de facto independent city state during the hellenistic era and even during the early parts of Roman domination. I don't see why this trend wouldn't continue since Macedon and the other Hellenistic powers tended to err on the side of remote control rather than direct control (hence why there was still a Boeotian League, Achaean League, Aetolian League, independent Sparta, and independent Athens).