I've said it ten times the past month....this "situation" in mining does not lead to centralization, exactly the opposite.
You know when you guys keep harping about "economy of scale" well that doesn't always mean what you obviously think it means.
You need to rethink the difference between a hobbyist miner with a couple of TH running in their basement vs a commercial building being supplied with a 0.5MW supply and transformer, and wiring performed by electricians, and CSA/UL/CE inspections, and liability insurance, and cooling the building doubling your electrical draw....and a myriad of other expenses that little children like yourselves have never encountered because you have never leased a commercial building to set up a business and you have no idea of the intricacies of business dealings at that scale.
I can't see how they are doing it when I consider the logistics and costs....certainly not with the efficiencies we have today at sub $400 prices.
are you speaking from experience?
i can relate as a 2TH hobbyist. i traded simple services for my electrician to wire in eight special 240W outlets (i'm oversupplied) with its own subpanel to the 2nd flr room of a building i already own. i put the miners up next to an open sliding door with a balcony and lined up fans pointing outwards up against the screen door. i had one of my workers install a $200 external barred gate like this for security. no other cooling:
the room is exposed to the open air 24/7 all year long. no licenses, insurance or any other special expenses except for electricity. i had additional Cat5/6 wiring run thru the walls to an external closet connecting the server with the asics to an existing internet connection used for other purposes. throw in a large roller rack.
total cost of setup and other ancillary materials, maybe $400. it pays to be small and nimble.