In a downtown Manhattan courtroom on Monday, lawyers for the US Justice Department and 40 state and district attorneys general warned a jury that the concert industry was being squeezed by a monopolist: Live Nation-Tickemaster. After amassing dominance over ticketing and artists' use of large amphitheaters, lead DOJ counsel David Dahlquist alleged, Live Nation constructed a "flywheel" of power that forced venue customers to stay within its ecosystem. It threatened or retaliated against them when they considered leaving. To even attempt to win business, Dahlquist said, ticketing rivals needed to offer "retaliation insurance" to venues worried …
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Russell Brandom has been covering the tech industry since 2012, with a focus on platform policy and emerging technologies. He previously worked at The Verge and Rest of World, and has written for Wired, The Awl and MIT’s Technology Review.
iOS 6、Windows Phone 8 以及 Android 4.1，图片来自 TechRadar三段式导航是最典型的例子。Windows Phone 底部永远只有三个按键：返回、开始、搜索。这种逻辑带来一种确定性，即无论你深入多少层级，按返回键都能一步步退回之前的应用页面和操作原点，而不是像 Android 那样最终被直接抛回桌面。