>>134903
you can! hell, I've done it
but at no point did it feel like a cohesive system like Serenity does
everything fights you the whole way (particularly the amount of different UI toolkits on use, but then there are the UI design differences between applications that don't feel like old-school Windows at all)

you probably could get that result without writing our own underlying kernel and shit, but you'd be constantly tempted to just ship the same disparate batch of existing software found in any random Linux distro so you can have a usable system now, which is probably why no one has done it