Maybe it could be optional.

Companies might decide it’s worth to take a risk, and hope that engaging will differentiate them from others, and generate engagement/good will/hype…

Like a sponsored Show HN

Do you have a link to your math?

I can't find it, sorry. You can reproduce it, though, just increase energy consumption exponentially by 1.04 or so until it reaches 1-2% of the insolation from the sun. I had done it a different way but retrospectively this is easier and better.