CTOs and CIOs of non-technology companies with IT departments, departments which have a bunch of legacy stuff they're just getting around to deciding how to deprecate/replace.

That's the target customer for a lot of the stuff the major cloud providers do, actually. It's the whole focus of IBM's cloud hosting (Softlayer.) It's a majority of what Azure does. Even on AWS, look at any services that aren't pure automagic-IT-for-devs services, but are instead e.g. data-science services (Redshift), or pure ops services (AWS Storage Gateway), or even "IT for non-developers" services (AWS WorkSpaces!), and you'll see the same "CTO-ese."

Any IT service that isn't grown through groundswell support by devs, is grown by top-down partner-choice by a CTO.