Since density with Si is approaching a wall soon and thus a switch in materials likely to end up being necessary at some point in the next 2-3 decades anyway, I

Since density with Si is approaching a wall soon and thus a switch in materials likely to end up being necessary at some point in the next 2-3 decades anyway, I feel like rather than being immediately revolutionary, all that'll end up mattering is where the theoretical limits are. After all, at that point, you need to retool and retrain anyway.