为什么我生成的数据，我却至今毫无所有权？
Opportunity
每一款你使用的应用都会保留你产生的数据，而你无法将其带到任何有用的地方。所谓可移植性，不过是一个下载按钮，给你一个毫无用处的文件夹。跨服务拥有并复用自己的数据，至今仍只是一句口号，而非真正的功能。
Why it matters
无法转移的数据，就是你并不真正拥有的数据。
我如何评估机会
The Opportunity Score is my own read, not a measurement: how much it hurts, how often it bites, and how little exists to solve it today. Higher means I think it is more worth building.
How much pain it causes when it shows up.
How often people actually run into it.
How little good tooling exists for it today.
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