As a good rule of thumb, proprietary technology must be at least 10 times better than its closest substitute in some important dimension to lead to a… - Peter Thiel

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As a good rule of thumb, proprietary technology must be at least 10 times better than its closest substitute in some important dimension to lead to a real monopolistic advantage. Anything less than an order of magnitude better will probably be perceived as a marginal improvement and will be hard to sell, especially in an already crowded market.