If it comes to a real hot clash between Denmark and it's allies on one side and the United States at the other in just about two months everything Bert has written are good warnings but it all will be too late.
Because it will just take only one Presidential Executive Order to eject every European government, business and organization from M365, Azure, AWS, Google Cloud, and any and all other US-based SaaS/PaaS services and to my knowledge nobody has, or is at least strategizing for, alternatives.
So I think the more likely end result will be like an atomic bomb was dropped on Europe, but in a digital sense. Absolutely nothing will work anymore.
The issue is to try and focus on making a good cloud that startups etc would like to use. That should be the goal. If the goal is not being strategically dependent then it'll never work.
"Self hosting is easy because you can just buy a PC and have stuff run on that PC" is a pretty weird take. Yes, you can store files on a PC and even run some code or a web server, but to use a PC as a server is crazy. And I say this because I have actually seen this.
That said, yes, nothing is impossible (although at a chip level things get more complicated). You need resources and a sense of purpose or urgency.
Side note: executives don't need tech skills because of sovereignty issues, they either need them in general (e.g. AI role and limits, lock-in, open source, security, ...) or they don't. This is just one aspect of IT where executives are, or may be, involved. And to be honest, if digital sovereignty is totally possible, executives may be ignorant, but doesn't that make consultants ignorant, too (at best)? You can't totally shift blame like this.
> I have actually seen this.
I have actually done this. As Bert says, you can get a long way if you know what you are doing.
I feel like framing this as non technical executives are somehow being decieved by big bad technical folks and thus should "skill up", is a potential recipe for disaster.
I suspect most situations aren't "can't do that" it's "can't do that within the realm of choices you guys already made to accomplish other things...". Executives coming along with "nuh uh, can to, took a class!" I suspect won't help.