Machine telemetry data (logs, metrics, traces) are shipped around as highly redundant utf-8 strings. I'm sure there are plenty of other examples of 2+ orders of magnitude improvements that aren't even low hanging fruit, they're basically groundfall. But picking them up may nonetheless require quite a bit of effort, and a major reevaluation of corporate values. Maybe the RAM crunch will be sufficient incentive? Idk.
EDIT: It's also possible that the era of hypergrowth might end. Most of the world's addressable eyeballs are already being monetized. There's no new coal seam to mine. If tech becomes more about doing the same with less, and less about explosively growing at all costs, we'll probably see more efficient systems. And fewer people building them. I think this kind of larger systemic change would be more likely to drive efficiency improvements than the (probably more temporary) RAM crunch.
EDIT: It's also possible that the era of hypergrowth might end. Most of the world's addressable eyeballs are already being monetized. There's no new coal seam to mine. If tech becomes more about doing the same with less, and less about explosively growing at all costs, we'll probably see more efficient systems. And fewer people building them. I think this kind of larger systemic change would be more likely to drive efficiency improvements than the (probably more temporary) RAM crunch.