I think humans are excellent survivors. I don’t lose sleep over externalities because of that alone. What I mean by that is that once people realise their daily lives are being affected by a negative externality, they start making decisions that alleviate that hardship.

I do recognise though that it’s an unsolved problem, and will lead to some form of regulation as our understanding is lacking.

I think only harmful monopolies should be broken up by force, since they’re a legitimate market force. I’m conceding some ground on that because I’m not prepared to claim that monopolies aren’t always harmless.