actually you are incorrect in the matters of that we don't pay for it, which we do pay for in the form of a dev fee. that said not much advancement can be made with amd and equihash, my question is why has he not reduced the dev fee considering amd gpus for the moment have hit there max, better yet why hasn't he removed the dev fee atleast with the zcash miner since he cannot make anymore optimizations in the code.  which quite franky makes sense to do