All of India's weapons systems come from Russia, India manufactures ZERO weapons systems in house
They are competing against U.S. manufactured Pakistani J-Block F-16 avionics packages and ChiCon stolen Raptor knockoffs

Can India afford to retool every combat aircraft in the arsenal? Retrain all pilots? All crew to load said weapons onto the aircraft? All avionics to repair the radar? All Engines workers to repair and maintain the engines?
Logistics pipeline for replacement parts?