It will always be profitable to mine Bitcoin a free power, unless the price goes to $0.
Miners age like fish. Not fine wine. The moment they come off the assembly line, their value is decaying rapidly. With hashrate going up forever (Laura), miners might have a shelf life of ~3 years (making this # up). If the cost and maintenance of the miner does not recover enough sats to cover itself, then even with free electricity it will be unprofitable.
It is a well-understood business tactic to operate at a loss long enough to force your competition out of business.
Miners age like fish. Not fine wine. The moment they come off the assembly line, their value is decaying rapidly. With hashrate going up forever (Laura), miners might have a shelf life of ~3 years (making this # up). If the cost and maintenance of the miner does not recover enough sats to cover itself, then even with free electricity it will be unprofitable.
It is a well-understood business tactic to operate at a loss long enough to force your competition out of business.