As a contrast, the worst sales people I have been around are extrovert and think they know the tech, so the can handle everything on their own. This has inevita

As a contrast, the worst sales people I have been around are extrovert and think they know the tech, so the can handle everything on their own. This has inevitably resulted in losses/disasters. These kind of sales people are a better fit when the product has been in the marketplace for 1-2 years and has survived ~5-10 customers. By then it's a lot more packaged and well-defined. You still need a strong central sales "command structure" though. I have actually met some (semi-)introverted sales people. They never made any sales, or got anywhere close to it.