would someone kindly clarify this paragaph, please (RH business model)

[Elton Woo]

"Open source software is not free. Though freedom may be an abstract concept 
for commercial products, it can be ideal for software. Free software means no 
one company can fully own and conceal it. Software lock-in is impossible."

I have just read, and re-read the above statement four times, and I still
don't understand it.
Here's the link:

http://www.redhat.com/about/mission/business_model.html

What I see with my eyes, have read, and (hopefully) understood is:
"Open source software is NOT free". This statement is copied
and pasted directly _as is_ from the Red Hat web page. Are my 
eyes deceiving me, or am I NOT understanding something here?

... and NO, I am *not* being sarcastic. I honestly can not understand
that statement.

Elton.
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