It’s terribly inefficient in many ways. Data centers with best GPUs are the most efficient hardware and energy wise. They are often built in places with access to cheap/green energy and subsidies. Also for research/development cash is cheap, so there’s little incentive to play with some decentralized stuff which adds a level of technical abstraction + needing a community. Opportunity cost wayyy outweighs running this in a data center for the vast majority of use cases.