Blockstream bought Spondoolies remnant (people in the know understand what I am talking about).
My concern is that Chinese would stop producing miners. Maybe Blockstream has something lined up.
SOMEONE should step in (Samsung?), the only question is ensuring financing, chip supply and assembly.
It is NOT very easy as all US producers were either bad or went bankrupt.
Miner production is the last aspect that poses a threat to Bitcoin: it is the last centralized aspect of Bitcoin.
A crackdown on ASICS producers and foundries could hurt the system.
But its'...transitory.
In the long run, markets will readjust and new producers would come in to take their slice of the profits.