[ToucanLoucan]

My cynical self sees it as how cloud providers aim to make the most money: by making billing oblique and waiting for buzzword-happy project leads to mandate stuff be put on their service without understanding what the end billing will be.

I can't say that's for certain what it is. I just know a hallmark of any business with recurring charges that are otherwise incomprehensible is so they can hit you with the charge after the fact, and you have little recourse to avoid paying it without a ton of work for yourself or your team.