Surely, if they could make a breakthrough and come up with an invention, they would become over night millionaires, just from the home miners market. As the big companies are dominating, it's made the target sales from home miners grow. If it was profitable, home miners would be ripping the hands off the inventer!
If someone would design that kind of miner, they would not sell it you or me so I do not see the point of this discussion.