1. Too many ASIC Warehouses PoW parasites are trying to be on 1 grid.
2. 4 mining pool operators are not decentralized
What I have learned Franky1 is you are now as dumb as doomad.

Sad day for you.
4 pools does not mean 4 warehouses
oh and the "unknown" slice of the pie chart..
https://www.blockchain.com/charts/poolsis not a single pool called "unknown"
its many pools which blockchain.info cannot identify so just clumps the numbers together into one slice
and if you delve into the depths of data/statistics of each pool you would learn that the pool services thousands of users around the world. not one location