No technical reasons, but it would be unlikely for Apple or Microsoft to adopt a font made by Google, when their own alternatives exist, despite technical super

No technical reasons, but it would be unlikely for Apple or Microsoft to adopt a font made by Google, when their own alternatives exist, despite technical superiority. Android already uses Roboto, which has been heavily invested in for Android 4+ and now with Material design too. Of course, by Linux I'm assuming you mean the popular distributions of it like Ubuntu, but even Ubuntu has its own font which it is unlikely to change - other non-"branded" distros probably would be the only ones who might.