Jonathan Rosenberg of Google posted a rather long but thoughtful description of what
it means to be Open. Although he skips over a few things with a
hand waving and a "yeah, I know I just said Open is good, that
it's counter to what business types normally think, but in the
long run Open is better... it just doesn't apply to these few
things for vague reasons" the bulk of his post is both well
thought out and correct.
The crux of the whole thing: Open wins.
I agree. We all need to continue to grapple with that and to
continue to fight against the urges of "oh, but this thing is the
magical exception to that rule." It's not.
Open wins. Closed can suck it.