Apple's not really targetting netbooks - I mean, they might release one of their own, but they really aren't interested in calling up Dell and saying "Hey, let's cut a deal to install OSX on your next-gen netbook." So it's not strictly a fair comparison.
That said, yeah, it seems like Ubuntu is moving really swiftly these days. Swifter than Apple even, but let's not forget that only a year ago, people were complimenting Apple for being so swift-moving when compared to Microsoft.
I think the point of that comment was to say: "Netbooks are really popular. Apple is ignoring this while Ubuntu is embracing it. This is making Ubuntu popular, while Apple has pretty much maxed out its popularity."
Where's the proof that their popularity is maxed out? Their market share's grown steadily every quarter, they own the hottest phone on the planet, and their advertising's everywhere.
I don't have numbers on this and I haven't researched this, but I'd rather bet that Apple's increasing at a faster pace than Ubuntu. Or am I missing something?
That said, yeah, it seems like Ubuntu is moving really swiftly these days. Swifter than Apple even, but let's not forget that only a year ago, people were complimenting Apple for being so swift-moving when compared to Microsoft.
My, how things change.