IceDrill shareholders may have helped pay for HashFast's NRE costs. But that doesn't mean they get any additional profit. You still seem really confused. What does the Sierra have to do with IceDrill? Nothing. HashFast might sell a million of them, IceDrill shareholders won't get a dime of that money.
The more hardware HashFast sells, the more $$$ they have for their next gen chip's R&D.
IceDrill has first dibs on bulk orders of that chip, which will be a game changer.
ALWAYS BET ON iCE...