Enough to sue Amazon for facilitating and profiting off the sale of products infringing on my IP, but not enough to pay Amazon to police their own platform. Policing Amazon's platform is Amazon's job and is a cost Amazon should bear. I don't have to pay Walmart for them to not sell products infringing on my IP, they do that on their own and when they fail, they are liable for my damages.

Example, my Dad published an e-book he sells through Amazon, and I'll be damned if there aren't other Amazon sellers offering my Dad's book for sale...its ridiculous.

I think most people are simply ignorant of the sheer volume of transactions of counterfeit goods on Amazon and similar platforms. The platforms benefit from each transaction regardless, so the platforms often evolve to encourage volume, nothing else.