It's a very astute observation that open source doesn't mean non-commercial.
But the reason people confuse them is that in practice, open source and non-commercial are highly correlated. Commercial means involving trade. Most users of open source software, especially the visible ones, do not compensate the producer for it. Most developers of open source software do not do it for compensation. Conversely, there is very little closed-source non-commercial software in the world.
What we have is one of these unfortunate terminology shifts, like when "IDE" comes to mean ATA.
Copyright © 2018, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds