If there were five to ten rebellions every year during the Hellenistic period, there is no state on Earth that would be able to withstand that and civilization would collapse into chaos much like with the Sea Peoples who helped to bring down most of the Bronze Age Eastern Mediterranean states. That would be like arguing the Carthaginians spent their entire existence putting down rebels, when in reality the most noteworthy occurrence was the Mercenary War of 241–238 BC. There weren't major revolts against Carthage after that point, although the Romans pretty much dismantled the Carthaginian Empire following the Second Punic War in 201 BC.
Are you honestly suggesting that the Romans had to quell a Spartacus type rebel figure several times each year? What?
From my count, there were
three Servile Wars during the entire course of the Roman Republic, not
200,000 Servile Wars. That's only a slight exaggeration given the amount of rebels you have popping up in nearly every single province after about 8 to 12 turns (two to three years time lapse in the game). These are not tiny armies, either, especially when these "5 or 8 units" start banding together to multiply their strength.
From my understanding, history is dotted
periodically with major revolts and rebellions, not constant gridlock and chaos. For instance, the civil wars among the Parthians for royal succession and the eventual Sasanian revolution against them, the Yellow Turban Rebellion that rocked China during the Eastern Han dynasty (which had previously been stable and prosperous), the two-decade long revolt against the Ptolemies in Upper Egypt (206–185 BC) by native pretenders to the throne (self-proclaimed pharaohs Horwennefer and Ankhwennefer), the Fourth Macedonian War fought by the royal pretender Andriscus against the Roman Republic in 150–148 BC, or the Sertorian War fought in Hispania (Iberia) from 80 to 72 BC between different political factions of Romans.
Again, are you just talking about pirates and banditry, or are you talking about serious nationwide organized revolts and civil wars?