Forget the cloud. What if the ad is the operating system? Windows 12 will be using a distributed architecture, running on top of global ad networks. Every advertisement medium (TV, radio, web, video) will include an x86 interpreter that runs Windows services (ARM support will come later).
The same tracking tech used to target you with that ad will be used to log you in to your Azure Copilot 365 OneDrive account, so you can access your files and applications seamlessly without having to remember a password or pin. When your smart toilet is showing you an ad for Draft Kings to earn your flush credit, you'll be able to check your emails, connect with the fam, or ask Copilot for assistance.
That's actually illegal bundling behavior, something they wouldn't dare do if Biden was still president and Lina Khan was still head of the FTC.
I think actually that the future of Windows won't be so dire post Trump. There's no way the pro-monopoly brain rot survives this admin, and people will soon start to realize that the billionaires, although easy targets, are just a symptom of lax regulation rather than the root cause of the enshitiffication apocalypse of the mid 2020s.