billionaire media tycoon and mayor of san francisco. vp @foundersfund. ringleader @hereticon. editor-in-chief @ pirate wires 
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The 'extraction' term is an insult to every founder who sacrificed to build a company, create jobs, and solve problems
It sounds like they borrowed it from the Great California Rush for gold panning. The sentiment is just that-- as if the wealth was strewn all over CA and the techies came to gather it with the least effort!
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