"The sales would never have been generated in the first place if pinterest never existed."
That's true, the sale would never had been generated if Pinterest never existed. But the key point here is that the sale would still have been generated even if Pinterest was dropped from the affiliate program. The user generated link would still exist.
As a blogger you could say well I'm not going to link to any Amazon products now. Pinterest doesn't have that luxury. They could remove any links that they can't monetize but users would revolt since they are the ones adding the content and links.
That's true, the sale would never had been generated if Pinterest never existed. But the key point here is that the sale would still have been generated even if Pinterest was dropped from the affiliate program. The user generated link would still exist.
As a blogger you could say well I'm not going to link to any Amazon products now. Pinterest doesn't have that luxury. They could remove any links that they can't monetize but users would revolt since they are the ones adding the content and links.