This is true, but also so banal as to be meaningless. Yes, nobody lives in vacuum. So what? Yes, people hire other people to help them to achieve their goals - however, being paid by somebody does not automatically entitle you to be part of every achievement that they payer reaches since the moment of service. Sometimes there's a relationship that does imply common achievement - like trainer/athlete or mentor/mentee or teacher/student - sometimes it may go beyond mere trading of service in exchange for money. But this is a special case which definitely does not apply to any service and transaction, it is usually unique and develops over a long time. Saying that just because there's a network of people and services that surrounds us they all have claims on our achievements doesn't make much sense.