IT Airbus From Bottom Up
There already exist quite a few companies, products and systems to be used. They are not AWS-scale, but that might in many cases be an advantage. I am a Hetzner mini customer and they always respond to my questions+requests in time and with competence.
So if you are an IT decisionmaker, just give Hetzner a try. First for small projects, then midsize and eventually large-scale. Hetzner does have an API to spin up and down servers by shell script. Find out whether you like their technology and their customer support.
Then there are OVH, Ionos, Stackit/Schwarz IT, Deutsche Telekom and the British have their own companies. Give them a try, too.
Regarding IT Systems, there are plenty of non-monopolist alternatives to be used:
https://di-fg.de/IT_Airbus.html
Regarding SAP - they are a behemoth, but always anxious to never compete with Google, Amazon and MSFT base services. It can be seen in their rhetoric here. They were anxious not to create an alternative to Google Search and this smells of very much being beholden to foreign interests.