Guru bhai honestly speaking you're unnecessarily mixing point defense system with LCA Tejas. Point defense per se is a defense of very limited area like airfields, ships, sensitive installations etc etc. SAMs are preferred over short range interceptors because of SAM's quick reaction time, aircraft can't be scrabbled that quickly & it's impossible for aircrafts to fly around the clock. Moreover how will you deploy LCA for point defense of navy vessels, given Tejas can fire anti ship missiles? The world has moved on and so does India, we are no longer living in the era of 2nd world war. Tejas is a multi role aircraft, claimed to be capable of firing ATA, ATS and ASM - don't make it a point defense aircraft that per se is more a short range interceptor and less a MRA. The idea behind tejas development was to replace aging fleet of IAF, it is supposed to replace Mig 21 and Mig 27, former is a fighter and latter is an attack aircraft. How can a point defense, preferably a fighter aircraft, replace an attack aircraft?