This stirs up some of the sense of irony found in business-friendly phrases like "think outside the box."
Everyone is building Web apps; what's the opposite? Phone apps? Brick-and-mortar services?
Many things don't have a proper opposite. Like when people say that "pepper" is the opposite of "salt". You know that's not true, but the actual opposites is ... complicated.
This post is a pretty useless generalization, notable only because the guy who wrote it is wildly successful. And somehow, we're supposed to learn something from it -- "Thanks."
I used to think re-seeing was a waste. But it's powerful because it can change actions now. You don't have to be Tim O'Reilly every post, being Seth Godin is just fine. Both give value differently.
And there's value in seeing the same idea expressed differently. I like to see the metaphors others think in. It makes communication with them easier.