Well, India is hobbled by their dependency on Foreign arms suppliers.
In a real shooting war, they have roughly 1 week of advanced munitions to expend. If foreign suppliers refused to sell them additional missiles/smart bombs...etc, their modern war effort grinds to a halt after that period, and they would have to rely on their own 1960s era level of armament technology.
Which is why they insist on the products being manufactured at home. From the Sukhois to the Bofors shells. Even Boeing and Lockheed-Martin will end up doing the same, if they win any contracts.