You may have never heard of Fred Lennon or William S. Lerach. They convert money to influence. It appears intrinsic and extrinsic motivation are intertwined inextricably. And there is research to support this also. Carol Sansone has done interesting research on the nature of boredom.
Some work provides little reward, intrinsic or extrinsic.
To illustrate Dr. Sansone's research let me describe a portion of a documentary about south Louisiana. It showed group of about 5 women of various races seated at a common table piled with shrimp which they are peeling. Machines can't yet be devised for this task and some folks like to buy their shrimp already peeled. The process is easy enough, something I did at least once per week for lunch or dinner as a child. Snap off the head, tear down the legs, break off the tail fins, pry back the shell and out pops the white meat of the shrimp's tail.