Blackwater, most of us can relate to your frustration regarding the developmental timeline and effectiveness/efficiency of DRDO systems. But do you know the reason why we were overrun and ruled by the British for 200 years? It was not manpower or lack of unity among our kingdoms. It was our lack of warfare technology.
We are still laggards in this area but we are closing the gap with every passing year and we will be at the cutting edge of warfare systems in 2-3 decades. If instead, like you say, we put all our eggs on import of all our weapons systems we will suffer the same fate that we did with the British, sooner or later. There is no escaping that.
Edit : Apologies LF, I was typing this post while you submitted the above instruction and hence did not notice. Please feel free to remove it if necessary