The thing is, and I apologize in advance for being blunt, it doesn't matter what you think. It does matter what the Indians think that they ought to do with their lives. Some of them might think that optimizing Advertising algos to make money makes them happy, others might find the challenge of solving real social problems exciting. That choice is theirs, individually, to make. I have friends who emigrated to the States and became wealthy doing quite routine work, but their children are now back in India, volunteering for social work. I'm not saying that's always the case, but it's not something we can (or should) force anyone to do.