And? As Greek warfare expanded in depth and destructiveness the move away from ritualization of the battle would continue, with or without the Macedonians.
A modern world without countries is not my idea. I simply stated some of the things that would be butterflied away in such a TL. Since the OP later mentioned that city states like the Maya would be acceptable, I brought up that the Greek city states would still be able to exist.
The Greeks where a fringe culture at the end of nowhere. They were lucky that they had good generals and terrain that the Persians weren't familiar with. They were also lucky that the Persian emperor was arrogant and did not let his generals modify their techniques, otherwise a future historian would be wondering why they counted pot shards.
It took a "barbarian" people the Macedonians who where learning from the Greeks to spread their culture and create a Hellenic Crusade throughout the Persian empire and beyond.
In OT the Romans a mixed breed of Greeks and others from the Apennine Peninsula were the ones who spread Hellenization west.