That's going to change in the future with NPUs (neural processing units). They're already being bundled with both regular CPUs (such as the Ryzen 8000 series) and mobile SoCs (such as the Snapdragon 8 Gen 3). The NPU included with the the SD8Gen3 for instance can run models like Llama 2 - something an average desktop would normally struggle with. Now this is only the 7B model mind you, so it's a far cry from more powerful models like the 70B, but this will only improve in the future. Over the next few years, NPUs - and applications that take advantage of them - will be a completely normal thing, and it won't require a household's worth of energy. I mean, we're already seeing various applications of it, eg in smartphone cameras, photo editing apps, digital assistants etc. The next would be I guess autocorrect and word prediction, and I for one can't wait to ditch our current, crappy markov keyboards.