Comment by rkuodys

But something can be valuable to somebody without hurting you. For example if you participate in study as a member of control group. There is no impact to your life and huge benefit to whoever is producing the research. Similarly waste collection businesses take something that has no value to you and generate profit by modifying your waste into something valuable. That is to say - the fact that somebody gains value does not equate that you are loosing the same value.