His conclusion at the end is that serverless is the future.
Which is interesting to me because on the one hand he might be entirely right, but to my mind it shows a deep underlying problem with this way of thinking.
He even mentions during the talk that if you don't move to the way he's suggesting Google and Amazon will own everything, but I draw the opposite conclusion: If we do what he is suggests then Google and Amazon will own everything, because he's saying that we should be giving them everything.
Anyway, the issue with the method he's using is that it completely ignores economic incentives.
For example: If "building it yourself" costs 0.1% of what it costs to use a commodity product then that reality is not reflected at all on a Wardley Map, in fact a Wardley Map may push you towards using commodities blindly even if they do not make economic sense.
Granted: this is a conclusion I came to from his talk, I have not read the 600 page book.
Here's a video of Simon Wardley introducing it: https://www.youtube.com/watch?v=2IW9L1uNMCs
And for all the details here's a book: https://www.amazon.com/Wardley-Mapping-Knowledge-Topographic...
And book free online: https://medium.com/wardleymaps