Billionaire investor Vinod Khosla: Half of today's successful startups won't sustain their sky-high valuations

Despite all of his success, billionaire venture capitalist Vinod Khosla says he still considers himself a “venture assistant” and works 80 hours a week. The 66-year-old founder of Khosla Ventures, the legendary VC firm that has backed Silicon Valley darlings like Square, Instacart and DoorDash, …

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