Affiliate marketing programs allows merchants to expand their market reach and mind-share by paying independent agents on a cost per action (CPA) basis. Affiliates only get paid if visitors complete an action.
Most affiliates make next to nothing because they are not aggressive marketers, have no real focus, fall for wasting money on instant wealth programs that lead them to buying a bunch of unneeded garbage via others affiliate links, and do not attempt to create any real value.