I completely understand you're referring to FSF culture. I'm not referring to that. I've followed Richard Stallman for over 20 years.
Linux/BSD source code were part of a lineage that many of today's operating systems, whether you want to package that up as Mach, UMX, whatever.
1. Mac OS X includes oss code in it's foundation.
"Apple founder and CEO Steve Jobs once tried to hire Linus Torvalds, the irrepressible Finnish coder who created Linux and gave the thing its name.
But Torvalds said "No," and not long after that, Apple hired Jordan Hubbard, the creator of FreeBSD, a lesser known, but still thriving, open source operating system based on UNIX. It was a better fit: Mac OS X shares conceptual roots with Linux, but it shares honest-to-goodness code with FreeBSD." [1]
"The code at the heart of Mac OS X was born in the mid-1980s at NeXt Computer, the company Steve Jobs founded after his first stint at Apple. NeXt built a operating system based on two existing UNIX projects: Mach, from Carnegie Melon University, and BSD, created at the University of California at Berkeley. But on this base, they added their own, private code – such as the Cocoa programming framework and a graphical user interface – hoping to provide the sort of slick software environment pioneered by the Apple Macintosh." [1]
"Darwin, the core of Mac OS X, was open source and included quite a bit of code from FreeBSD." [1]
2. Android
"The Linux kernel is an extremely important part of the software on nearly every Android device. This section describes Linux kernel development and release models (below), stable and long-term supported (LTS) kernels (including why all Android devices should use stable releases instead of cherry picking patches), kernel configuration and hardening, requirements for interfaces and the modular kernels (introduced in Android O), kernel debugging and network testing, and SquashFS." [2]
"Android's history dates to 2003, when a team of California entrepreneurs launched Android, Inc. Their initial goal was to develop software for digital cameras. In 2005 Google acquired the company and put the team of Android, Inc. developers to work building an operating system for phones that was based on the Linux kernel and adaptations of some other open source utilities." [3]
I appreciate you feel the need to feel better about yourself at the expense of others by calling others names, but there's really no need, nor does it add to advancing any kind of understanding about the topic, except perhaps shining a light on jumping to myopic reactions and judgements of others.
I will not be replying to further messages from you on this thread for the above reason.
[1] https://www.wired.com/2013/08/jordan-hubbard/
[2] https://source.android.com/devices/architecture/kernel
[3] https://www.channelfutures.com/open-source/open-source-and-a...