The way in which these particular machines operate means that you need to make them guzzle 10x as much data, water, energy, or whatever other metric to get a meager improvement in how smart they are. 5 years ago, finding ways to scale them to be thousands of times larger was pretty easy, but now they’re coming up against the limitations and trying to break through the limits by just burning up more resources instead of slowing down to find a better approach.