Question:

I understand in a "Free Market" economy, supply and demand should be the only factor determining the price of something. PWP make up only a limited yet growing piece of the proverbial pie; but why do they have to keep playing games with "Ghost Writers" who are getting paid with the profits Big Pharma makes over the blood, sweat and tears of the very people they are trying to help with their drugs in the first place?

One word seems to keep coming to mind: greed, pure and simple.