I can't speak for mr "Raven's Lake" (Korpijärvi) but I think the idea is, if you're the kind of person engaging in the things he lists, you think governments are necessary or essential to the creation of markets and trade.

Which of course isn't the case, necessarily. A proper run-down of the matter would be thesis-length at least, since there's no single universal answer, as economy is far messier a subject than the simple maths used in it suggests.