Note to commenters: In this context "Bitcoin production" is not mining; they're talking about the development of the protocol being centralized.
https://www.buybitcoinworldwide.com/mining/pools/
And the Chinese company that produces the most asic miners (Bitmain)... also runs a mining pool. Gambling. In a Casino. Shocking.
The paper seems to focus more about the political/organisational problem, which to me seem more inherent and harder to solve.
At least in a capitalist democracy we get to elect the criminals who rob us blind.
Whereas, you do not have much of an option except to accept your national currency.