SW and HW advancements will bring this topic in the "good enough for vast majority" field, thus making GP point moot. You don't care if your LLM ASIC chip is not the latest one because it works for the use you purchased it for. The highly dynamical nature of LLM itself will make part of the advantage of upgradable software not that interesting anymorw. [1]

[1] although security might be a big enough reason for upgrades to still be required