I've only really worked for $ENTERPRISE and for just a single reference point the last two places I worked spent >$10M/month on their AWS bills. Most of the points in the article ring true to my experience. I will say that reading comments on HN/X/Reddit/etc it sometimes feels a bit lonely in that even though I know I work with tens of thousands of technologists, I rarely see the unique challenges in getting things done represented in even the slightest way.