because you're not being paid on your input, markets don't run on the labour theory of value. You're being paid for the lowest amount that you, or someone else,

because you're not being paid on your input, markets don't run on the labour theory of value. You're being paid for the lowest amount that you, or someone else, is willing to do your job, and that amount happens to be lower in a place with lower cost of living. people earn more in San Francisco because the rent is a gazillion dollars and if they got paid Indian wages nobody would show up at the office.