Comment by jacquesm

> Or am I missing the gravity somehow?

Yes, there is the risk of cascading failures, some industrial processes are very hard to re-start once interrupted (or even impossible) and the lead time on 'some transformers' can be a year or more. These are nothing like the kind that you can buy at the corner hardware store. A couple of hundred tons or so for the really large ones.

Grid infra is quite expensive, hard to replace and has very long lead times.

The very worst you could do is induce oscillations.