Actually the most important foundation for making devs. switching to Polygon is low cost and transaction speed, and it's already in Polygon, the thing Polygon has to do to beat BSC is to have a big exchange like Binance so it will easily beat BSC.
Do you think Binance will agree to that? LOL 
, especially if the intention is to beat BSC which is completely owned by Binance, BSC became famous because he was born from a well-known exchange so he could immediately get a good response from new project Devs, unlike Polygon which does not have any exchange to date.