There are economies of scale involved. Cheaper hardware (like a gaming GPU) costs more electricity, but can be purchased off the shelf. Custom ASIC hardware is dramatically more energy-efficient, but you need a pretty significant investment to get started. When that economy of scale is maxxed out, there are further optimizations to be tackled like superconducting electronics, quantum computing, thinsat arrays, and so forth.
There are economies of scale involved. Cheaper hardware (like a gaming GPU) costs more electricity, but can be purchased off the shelf. Custom ASIC hardware is dramatically more energy-efficient, but you need a pretty significant investment to get started. When that economy of scale is maxxed out, there are further optimizations to be tackled like superconducting electronics, quantum computing, thinsat arrays, and so forth.