Regardless of VC subsidies, the cost of compute always trends down over time. Whether you like it or not, LLMs will be a pervasive part of everyone's life forever (or at least until a better replacement comes along).
Cost of compute trending down is usually lost as the resulting software bloat that fills the empty space like a gas. We already see this with LLMs. Models get bigger and bigger in an arms race.
I don't think that is a safe assumption to make. Moore's law is not playing out any longer as it used to. Jensen Huang already called it dead 4 years ago.