TBF that is a problem with your company (many companies and govt), not non-cloud hardware. If you have good management practices then all the groups involved will share ownship of delivering the successful outcome (whatever you need your giant high performance filer for), which also includes empowering the lead engineer to hire/train (which is often better IMHO) people with the requisite skills.

So what you are arguing is that many places have limited competency, and you can outsource the need for that to AWS -- at significant cost. I dealt with a fair number of turf guarding drongos so I'm sympathetic to this idea, but it remains true that you can get much more peak performance, and perf/$ from your own hardware.