Meaningful local computer power could only survive realistically if exceptionally high demand (multiples of that of AI data centers) could be generated within weeks/months to get the semiconductor companies to pivot and sell the components mainly though other channels.
64GB laptops are no longer in stores. 32 GB is probably going to get squeezed out soon. For prebuilt desktops it's the same. That's no basis for meaningful local, decentralized compute.
Collaborative native software that works peer-to-peer without servers, no large-scale data breaches because there are no giant databases of PII, for things that really do benefit from being hosted (e.g. photo sharing or community notice boards) they could be run by municipalities or local community groups.
This analagous to distributed cloud infrastructure that for 99.9% of companies could be replaced with a few servers and a 2-3 node postgres system.