Meanwhile, how many are giving their teams the resources (i.e., people) necessary to do the analytics on the bill required to find & cut costs? Every cloud I've worked with has been terrible at billing in a way that could be reasonable investigated. At one point we literally pulled all the billing data into a SQLite database. (And that was a great idea, as it made queries against it much faster.)
Further, most higher ups seem to have a sense of "it won't be invented here", and so a lot of stuff ends up in vendor land; need more people then to pull those separate bills into one spot, and start attributing costs against the revenue they might help generate.
I've also worked a fair number of places where people were cagey about telling eng how much they're spending where. If you want your IT dept. to cut costs, they have to know where the money is going.
And then there's the yak shaving of it all: we've had a support ticket open w/ Azure for 9 days now asking "where did this $1k go?". Our Blob Storage "Cool" tier costs upticked, and I'm 99% sure the bill there is just wrong. Cool storage should be (price * amount stored) and the "how much are we storing" graph is not proportional to the cost graph. The only gotcha is an early delete penalty, and we are also pretty confident we're not hitting that. (We know what's being deleted when, and none of it should be subject to it.) But how does it take a over week to answer the question?