A lot of miners have access to free electricity, often through corrupt officials on some unsavory countries... or even US Army folk who are abusing their home's

A lot of miners have access to free electricity, often through corrupt officials on some unsavory countries... or even US Army folk who are abusing their home's utility bills (Uncle Sam pays for that electricity). Under these conditions, the utility company has to pay for say $100 in electricity to make $80 of cryptocoin. But since the miner has "free electricity" and doesn't see these costs, they only see the $80 of cryptocoin that they sold off.