An annoying side effect is that the (closed) "core OS" that the Pi runs on, ThreadX, is owned since 2019 by... Microsoft !

https://en.wikipedia.org/wiki/ThreadX

https://ownyourbits.com/2019/02/02/whats-wrong-with-the-rasp...

Note that the above is specific for the Pi 3 - the Pi 4, for instance, doesn't have the issue of a ridiculously undersized power connector (2.5W minimum standard for up to 13 W demand !!)