Your comments are interesting. I'm sorry that you didn't find the article useful. Part of the challenge of the article for me, as an open source advocate, is to actually make sure that I I made it clear that "free" doesn't always mean "open source" - that there are different kinds of no-cost software.
The article was
not meant to be a description or details about proprietary vs. free and open source software. For that, go to the
NOSI Primer (which I also wrote, by the way)
It was meant to look at "low cost" software as a group, and help people understand that software, no matter what the cost to acquire, has other costs to implement.
This makes me wonder whether things have changed. In the past, people cared much more about whether or not something was free (as in beer) or cheap, and whether or not it was open source wasn't on the radar. Now, it seems that people well understand that acquisition cost isn't everything, and what's more important to some is free (as in libre). Perhaps it's time to change the message, a bit.