Exactly my point for the most part.
The fact that you basically had to provide a ELI5 here on HN for this, shows what a dismal job we, as an industry, have done to educate the larger world as to the best-practice of cloud selection should be.
We, on HN, for the most part, can spout off this tribal-domain knowledge because we live it most days.
But what would be great is to have these types of nuggest of information, empiracally delineated, available without effort to those who would like to know.
Specifically, in a way format/method where you don't need to have the lexicon to be able to formulate the proper question.
Most people, even those IT people who may work for a tiny office who has very little need for anything "at scale" may not be able to ask the questions.
An analogy could be (?): "everyone knows if they need a bike, motorcycle, car, truck or bus - and everyone should be able to assess their basic computing needs as well. It should be fairly clear if you need a single machine in an office, a colo or a cloud - and figuring out a path to doing so and selecting a vendor should be a straightforward task."