Computer Help and Support

Linux kernel is open.

Anything someone (individual or group) writes and puts under the open source license is open.

Anything open sourced and modified by someone is still open source.

Anything someone (individual or group) writes and wants to keep “private” (a set of libraries or routines that stands independent of open source stuff) but can be called by the kernel and/or other open source code MAY be copyrighted.

So all the stuff that Redhat uses that is open will still be open. But the stand-alone routines/code/libraries that they wrote completely independently may be closed.

That’s my understanding of the open source license. It doesn’t stop Chase or GM or Redhat or whoever from writing proprietary code that uses open-source Linux.