Most of them overlap pretty heavily though. Assuming 2B people, minus the 1.3B that China has (rough calculations), there's still room for them to grow user-wis

Most of them overlap pretty heavily though. Assuming 2B people, minus the 1.3B that China has (rough calculations), there's still room for them to grow user-wise. The issue is revenue though - having 1.5 B Indian users is not the same as having 330 million American users.