The quality or state of being able to be excluded; the extent to which something can be prevented from being used or accessed.
From 'exclude' + '-able' (capable of being) + '-ity' (noun suffix indicating state or condition). This economics and philosophy term describes the properties of goods and services.
Economists obsess over excludability—is something a 'public good' like a lighthouse or an 'excludable good' like a phone? This distinction determines how society should fund and distribute it.
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