because you have to pay to breathe
Remember when wolf0 wanted 50BTC on his work on the x11-x15 miner that was sold cheap and stolen?
Seems that the wolf is doing pretty good right now.
His public adress shows 200 BTC already. That is a $200 000 profit in a couple of years of spare time coding...
https://blockchain.info/address/1WoLFumNUvjCgaCyjFzvFrbGfDddYrKNRGood payment for a few lines of code... But worth every penny..
He seems to be in the pocket of genesis mining now, and the opensource competition is only done by students and lamers
The xmr hashrates on the cheapest modded bios 470 cards is around 700-800h/s with the wolf0 miner.
The unreleased Sp-mod #2 is only doing 550 on the 10603gb. (but only 40 watt in the wall)