>>2506840The populations of Pakistan and Bangladesh combined is about 400 million. The population of India is 1,45bn (1,2bn of which are Hindu).
The GDPs of Pakistan and Bangladesh combined add up to about 20% of the GDP of India which is controlled by Hindu nationalists. After a millennium of fighting, they only managed to conquer 1/6th of the Indian subcontinent.
When you look at how fast other places like North Africa, Iran or Iberia fell to muslim hordes, it's not bad.