I’ve often heard that the reason Windows has suffered from bloat and so much has been built on top of ancient underlying technologies, partially to ensure compatibility with old software.
If something like Windows 11 requires specific hardware in order to install it, why does it need to accommodate compatibility for archaic devices/software?
Would it not be preferable for Microsoft to start from scratch with an OS that is considerably more efficient and cut-down for newer devices, similar to something like Apple’s MacOS transition from Intel to Apple Silicon, and just provide security updates for the legacy operating systems that would be in use on un-upgradable hardware?


The backwards-compatibility stuff already in this thread is all true, but also they don’t know how to remove some things. Microsoft has wanted to entirely replace Control Panel with Settings since Windows 8 came out, but they gave up. And rewriting the whole operating system from scratch would take decades and still inevitably lose compatibility with some of the random old software mentioned here.