The best technical people may consider the marketing more important than the tech. I'm quite certain I can build a great system for any needs, but no confidence

The best technical people may consider the marketing more important than the tech. I'm quite certain I can build a great system for any needs, but no confidence I can sell it enough to support a business. In fact I'd probably be skeptical of a tech person who greatly emphasizes the challenge of the tech effort over the challenges of the sales effort.