I never expected these guys to do serious R&D off the bat. From simple parts making, to now full scale integration and testing work of a full system is good in my books so far from them.
No denying that it's good for them or even for job creation in India, just not that good for Indian defence, if our top companies remain to focus on doing basic production work for foreign countries. Only if the privat industry commit themself into proper R&D, India and our forces will benefit from the competition to DRDO and HAL. Otherwise they only compete with HAL for the licence production of parts (Do 228, produced by HAL and Tata).