And this is the danger, which could create a mining monopoly. You have the largest machine manufacturer, with the largest pool and number of machines operating in the world.
Unfortunately, I increasingly have the feeling that whoever has control over mining can control Bitcoin. With small and medium-sized miners closing operations.
But what would be worse, a large U.S firm controlling BTC mining or Bitmain? All politics aside, it would be safe to assume that Btimain control would be less harmful for two main reasons, for one, Bitmain is all-in BTC mining, they would lose everything if anything goes wrong with BTC, whereby on the other side, a large player who uses investors funds has nothing much to lose.
The second reason would be past experience, Bitmain dominated physical hashrate ownership, pool majority and manufacturing for dozen of years, they did not attempt to kill BTC, not saying Bitmain are nice innocent people, they are exactly the opposite but there is bad and worse, we don't know what the other large U.S, Russian or Rich Arab would do if they controlled BTC mining.