Making incredibly complex and opaque pricing structures is not necessary for the providers to charge for and make a profit on their service. And being technically difficult is a lazy excuse. Cloud platforms have to solve many, much more difficult challenges to offer their services at all, they just don’t want to invest the time in more customer friendly billing because they expect it will result in reduced revenues.

I know your post isn’t explicitly defending the platforms, but the arguments they use feel transparently flimsy.