[cgriswald]

To compare fairly, you'd also have to take into account relative fire risk and difference in frequency of outages.

> If it paid for itself as you claim, why are companies almost universally making an irrationally expensive decision?

I don't think he made such a claim. There's an implication that it's 'worth it', but not that it's necessarily less expensive to implement.

Companies aren't making irrational decisions. They just haven't historically been paying for the externalities.