Assertion: operating system's software | /r/HasProperty | bundled with hardware
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text: Note Revenue comparisons often include "operating system software, other bundled software" and are not appropriate for usage comparison as the Linux operating system costs nothing (including "other bundled software"), except if optionally using commercial distributions such as Red Hat Enterprise Linux (in that case, cost of software for all software bundled with hardware has to be known for all operating systems involved, and subtracted).