Apparently now even if you have a key, you can't even login to Windows without a Microsoft account...
Discussion
Really? afair I could choose local account for win 10 a few years ago, but did not install for years
#[2] find a volume license seller that sells volume or recycled keys like this German one https://www.softwareonlinekaufen.eu/microsoft-windows-10-professional-downloadlizenz/191/shop-details.html
If Apple ever did that I would leave immediately for Linux and GrapheneOS.