It refers to the all-too-common dynamic of the people who got there first trying to keep the next wave of others (who used to be just like them) far, far away.

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The system, called "PowerScene, " was first used to train pilots who conducted NATO bombing campaigns this summer, giving them practice flying their bombing runs.

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There is an entire economy of widgetmakers, and most of them are small, with some significant exceptions: YouTube was first adopted by MySpace members, who used the site's software to post videos on their profiles.

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