The flipside to that metaphor is that high-end CG productions never stopped growing in scope to fill bigger and better hardware - yes you can easily render CG from back in the day on a shoestring budget now, but rendering Avatar 2 a couple of years ago still required a cluster with tens of thousands of CPU cores. Unless there's a plateau in the amount of compute you can usefully pour into training a model, those with big money to spend are always going to be several steps ahead of what us mere mortals can do.