First of all running costs for AM is likely less than running costs for home miners because of the price of electricity and the high efficiency.
Electricity could be effectively free for a home mining rig in a house with electric heat (air and water), since they would otherwise be spending the same on electricity to produce it from their actual heaters.
Second, when manufacturers can make asics for half the cost that the average joe can get one for that means they can easily have twice the hashing power for the same cost.
All that tells me is the industry is very immature still.
They've proven its NOT expensive to remove though. With capital investment and advanced tech, they can almost passively remove a 'shit tonne' of heat and achieve infinite density.
The pictures made it look expensive. And the OP mentioned the coolant being expensive. Numbers would be more persuasive though. In any case, the heat is still expensive to make, and long-term, competitive mining operations will have to make good use of the heat they produce. Versatility will be a strong advantage here, and scaling up would appear to diminish from this.