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Thanks to the iPhone, millions of people finally have the Internet in their pocket, and feel it to be so. But there are still big obstacles to unleashing the innovative potential of the mobile web.

The industry's hands are tied in the US, because carriers and device makers, for the most part, keep outside developers from changing or adding unauthorized software. Similarly, computer industry players tend toward proprietary walled gardens. Apple is notoriously closed; Microsoft, which has a slowly growing presence in smartphones for business use, has made no secret of its move toward mass-market consumer phones; and BlackBerry is also is trying to move beyond business devices and into the consumer market.