It’s software running on your own computer. If you’re not supposed to turn off ads and OneDrive, change the default search engine, etc then that’s a pretty sad state of affairs.
Though as an ex-Windows developer and hacker, I can tell you that NT is pretty modular and is designed to be “fucked” with in various different ways. Microsoft just like to ship defaults that are more favourable for their own business than your typical power user.
I wouldn’t mind the defaults if they weren’t horrible. No, I don’t want Microsoft selling my data to 3rd parties. I don’t want an AI “assistant” watching everything I do. I don’t want crazy right wing conspiracy theory news stories in my start menu, or popping up next to the clock or wherever that junk lives. I don’t want my start menu to do an internet search. Or to try and get me to play candy crush. If I want a dropbox like service I’ll research my options. Don’t auto install onedrive and make it start automatically at boot.
None of that stuff is a core component. The only reason any of that stuff is part of windows is because windows is a mature product. And all their desperate product managers need to add stupid features to windows to justify getting promoted.
Maybe I’m just old fashioned, but I don’t use windows because I want to be part of Microsoft’s software empire. I just want an OS that boots fast and lets me play video games. I don’t buy ram from the computer store so some tasteless bozo at Microsoft can justify their 6 figure salary.