Tribal jingoism doesn't scale for the long-term.
In the short run, the fear-based attack on the 'other' is a great way to galvanize those likely to take up arms, defend the brand or send in cash.
But, fortunately, for all of us, the 'others' are able to band together. Fortunately, it turns out that connecting and understanding and most of all, granting respect, is the essence of the connection economy.
It's tempting to enjoy the short-term rush that comes from hating the other guys. It's certainly a good way to get the crowd on its feet. But it doesn't last.
When we're defending a physical castle, it's entirely possible that hating outsiders is a useful tool. But in a connection economy, hating the other almost always destroys the hater.