Microsoft really out here gatekeeping desktop aesthetics behind a paywall. You can run Visual Studio, compile code, host servers, do literally everything on an unactivated Windows... but changing that wallpaper? That's where they draw the line. It's the digital equivalent of "you can live in this house but you're not allowed to paint the walls." The threat is so hilariously petty that it somehow works as motivation for some people to finally activate Windows. Others? They wear that "Activate Windows" watermark like a badge of honor, staring at the same default blue screen for years out of pure spite.