in the same vein, I did some (somewhat wildly) speculative analysis around this a while back too
didn't really try to model "actual workload" (as in physical, vs the "rented compute time" aspect), and therein lies an important distinction: actually owning the GPU puts you at a constant minimum burn rate
and as corbin points out wrt power, these are also specialised formfactor devices. and they're going to be getting run at close to max util their entire operated lifespan (because of silicon shortage). so even if any do get sold... long mileage
I mean, who are you going to sell them to? the other bagholders are going to be just as fucked, and it's not like there's an otherwise massive market for these things