The reason is because advertisers are willing to spend more targeting a US user who had an average annual income of $50k where as one in India may have $5k. The

The reason is because advertisers are willing to spend more targeting a US user who had an average annual income of $50k where as one in India may have $5k. The user is 10x more valuable from a revenue standpoint so the cost you’re willing to bear to advertise to them is 10x etc