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Ah I see! You mean like what if instead of making circuits that are application specific to Bitcoin mining, they would make processing units that could also be used for, let's say, graphics? 🤔
Such as a RISC processor or GPU? What a ground breaking idea... 
Yes! Or if they continue to target business clients instead they could create something like an array of gates with programmable fields 🤔
But yeah, to get back on topic: ASIC miners as used for Bitcoin can do literally nothing else but process hashes. You could use the excess heat for heating, but that's about it as far as consumer use cases are concerned.