Planetary economies are just a different kind of organism, that at this point is a cyborg.
Thinking about the ideal energy balance devoted to planetary cognition vs planetary kinetics seems like a fascinating way to model the world. The main thing that makes humans so dominant is that we took the risk of devoting more of our energy towards cognition and as a result discovered magical ways to leverage and exponentially increase our kinetic power (e.g. bow and arrow).
What happens when we start devoting more resources towards cognition at a planetary scale?
I don't want to sound like "384kb is enough for everybody" but saying there's a fixed percentage of energy that should go towards computing is weird to me.
But you do sound like you're saying "384kb is enough for everybody". The reason to devote more resources to cognition is is precisely because we can't imagine the possibilities that exist with more clever thinking applied to our limited resources. In the same way, an ape with 10% energy allocated towards cognition (guessing) can't even begin to imagine the magic that gets unlocked by its ancestors that gambled on 20%. Hell, apes can look at us now and still can't understand us.
In this conversation, you're the ape who's blindly suggesting there's little worthwhile in expanding resources towards global computation, and I'm the ape who's blindly suggesting there probably is. Neither of us can honestly predict what might happen, good or bad.