Actually it's the only thing that has the potential to convince me to buy a product from Apple. I haven't yet but if it were closed, no way I would even consider it.
As I understand it, the BSD licence (which BTW only some elements of Mac OS X have, as happens with some elements of Windows) allows to redistribute binaries, modified or not, provided you keep the copyright notice. In that case, how are Apple products "less closed" than, say, Microsoft's?
Note: I barely use Apple or Microsoft, so the question is NOT rhetorical.
Indeed. How does using the stack makes windows any less closed? Since you can't even tell to which degree it was modified, I think the answer is "it doesn't at all". And I think the same reasoning goes for mac OS X.
