I acknowledge that this is already the case, to some extent. The cheapest laptops at Best Buy are crammed with the most preinstalled malware. That's been the case for, what, 25 years? But you've always been able to wipe that cheap laptop and make it into a much more capable, trustworthy machine.
Well, assuming LLMs do become a pervasive part of the computing experience, what happens to the cheap laptops? Do all computers get more expensive to accommodate local inference? Does the rift between the everyday user's experience and the savvy user's experience grow even wider than it already is? Neither outcome seems good for the average joe who just needs to check his email.