It's isn't WHICH of them wins... it's WHEN each of them wins. Tim Bray shows his good sense of the tradeoffs yet again.

The line between Web and Apps is getting blurrier, as he points out in his Instagram example:

The apps-are-the-future absolutists like to point to Instagram and yep, it’s interesting, all right. Consider this dreamy photo by Scott Hanselman. Is it part of the Web? Well, it must be, because I just linked to it. But can you find it in Google? Not directly, because Instagram explicitly tells the search engines to go away. But, well, you sort of can anyhow. Does the example really prove anything? You decide.