Try the flip side of the question - how many Indian start-ups would have failed or succeeded if they all built and deployed their stacks on their own?
But, I had asked a question in the parent comment - can it be shown that any of the start ups who failed or the ones who have done well can do even better if they did the stack internally?
What will qualify as a great company? Is the deciding factor that it does decent revenue or that it uses a pretty nifty technology stack or is it that it does decent revenue in which the technology stack is an enabler?
Zimbra - Well, the point is that Indiatimes did outsource it. Guess I gave you an example that you asked for there. Same is the case with NDTV and Tekriti. They may not be to your liking, nor am I sitting in judgement whether they are 'great' or not, but the fact is that you can build good companies and businesses either way - build or buy/lease.
Coming to what you have said, " As for failed startups, you will never know as a lot of those stories just die with the companies," this is precisely what I am trying to address. That, you just don't know what their reasons are. Just like I would not be able to tell you what is best for Infinitely Beta.
I agree with a poster above, that the blog linked here is written by an immature person.