It's so long since I read The Shock Doctrine that I can't remember details. But as broad-brush I find it extremely useful.
One of Klein's important ideas is "disaster opportunism", and the way both profit-seekers and ideologues can have plans stockpiled for when a nice opportunity arises.
A "disaster" (which can be any kind of major disruptive event) reduces people's ability to make a slow and thorough examination of such plans, and may also place those who might want to resist the plans in a vulnerable position where their power is reduced and thus their ability to resist is reduced. The organisation takes advantage of this reduced resistance to implement their stockpiled plans – and as the cherry on the top claims these plans are an actual solution to the disaster.
IIRC she gives examples like the New Orleans flood after Hurricane Katrina, and the way some organisations/companies sought to benefit from it. Wars are another obvious example of readily exploited disasters.
IIRC she then moves to the suggestion that forward-thinking groups might not sit and wait for random disasters to occur, but proactively hasten suitable disasters into being. Theoretically this should be true; why wouldn't they? And I can't remember Klein's examples, but I do personally remember in the lead up to the Iraq war there was reporting along the lines of "Wall Street wants it because they're saying it will be good for them".
What one could reasonably disagree with the book about would be the extent to which the desire to manufacture an opportunity has been a motivating factor in any given set of decisions; versus how much was opportunism after the fact. But again I don't remember explicit examples to judge each.
All in all I find that "disaster opportunism" is a very useful addition to my mental check list when trying to understand events. Considering whether a disaster has been actively curated is an important part of that.
So for example it certainly adds something to my thinking when I look at the fact that Russia has been creating refugees and channelling them and other migrants towards western Europe (per comments from Sir Richard Dearlove this week https://www.lbc.co.uk/article/russia-deliberately-channelling-migrants-europe-5Hjdh6p_2/ )
And simultaneously I look at the activities of Russia's recent guest Stephen Yaxley-Lennon aka Tommy Robinson, and his pal Danny "Tommo" Thomas, and how they are benefiting from the small boat migrants. It's particularly interesting that Thomas has started conducting live-streamed dramas just now, after the numbers of boat arrivals has started falling.
We can see how both Russia and Yaxley-Lennon and pals have had aims and ideas stockpiled for years; now between them they are creating / exploiting a major disruptive event (post-Brexit increase in illegal arrivals in the UK) and each gets to further their aims.
One might see this as too obvious to need spelling out with a special name like "disaster opportunism"!
However I find naming it and realising it's an actual structured technique allows me to look out for it, recognise it quicker, and (importantly) ask who all the involved parties might be.
As a caveat, obviously not all "disasters" are curated; sometimes organisations really are just seizing the opportunity after the event. And not all ideas put forward after an event are idealogical or profit-seeking plans which have been stockpiled awaiting a suitable opportunity. I just find it worth asking, in each case, whether we can see an element of post-event disaster opportunism or curated disaster opportunism, and who the involved parties are.