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.
They're already at 28nm. They can't realistically go smaller without spending enormous amounts of money, for very little gain. This isn't like going from 130nm to 65nm or from 65 to 28. At most they can go to 20nm.
IceDrill will lose out to Hashfast in the end, eventually Hashfast will leave you guys in the dust once cash flow is rolling.
My advice, get your 0.0016 dividend and get out.
You should wait and see what HashFast's next chip will do before offering erroneous advice.
ALWAYS BET ON iCE...They likely won't have another chip design for years.