The same principal has been tried with crypto mining.

Capture the heat and use it elsewhere like to heat the building.

Downside for heating buildings though is unless you’re doing it somewhere where it’s always cold, you eventually still end up heat you can’t use, and at that scale, there’s better heating choices. I heard the city of vancouver was looking into heating a swimming pool with it, at least that would have a constant use.

Then you still end up with the issue of the mining cards only being good for 2-3 years before the tech improves and they aren’t mining efficiently anymore, which then just leads to more e-waste.

But imagine if the cards themselves had a really long useful life or were super cheap and easily recyclable, we could put miners in things like space / baseboard heaters which were already going to be doing resistive heating and then gain something from that instead of just heat.