RMS makes no comment about "great software" in the post. He says that Jobs "made computers as a jail 'cool'" (paraphrase), and I think to a great extent that's true -- Apple has always been the most aggressively locked-down computer maker. Although OS X uses several open-source internals and although Apple even maintains some of these (including very important ones, like CUPS and X), they are still in some ways the most "locked down" computer (and consumer electronic) maker out there.