Microsoft exists in an effective duopoly for desktop computing - the vast majority of desktop computers run Windows, and only a small fraction run MacOS, and an

Microsoft exists in an effective duopoly for desktop computing - the vast majority of desktop computers run Windows, and only a small fraction run MacOS, and an even tinier fraction run anything else. That, combined with a host of other lock-in factors (the strong emotional attachments that people have to being a "PC person" and not a "Mac person", the relative expensiveness of devices that run MacOS, the software that only runs on Windows, the UX difference between platforms) put Windows in an entirely different class than password managers. Password managers are a commodity. Operating systems are not. Microsoft knows this, and they abuse it accordingly.