Earlier quoted context omitted.
I probably shit on the idea more than I needed to, simply because it's entirely possible that you could be looking to form a team and rally around a serious problem, and that team could be composed of people who deeply understand the problem in addition to fresh faces with a different approach. And I would fully support that approach. Lately I've been approached by a lot of "startups" who have made it inadvertently a…
I think this is were you are missing the bigger picture though. The solutions to the problem in your industry might not be based on the skills or insights of your industry. It might be that someone recognizes the similarity from another industry where the problem was solved in a specific way or that the insight just so happens to be solvable based on the knowledge of some specific technology. And it's NOT about ideas…
The crux of your argument is that an outsider may be able to pattern-match better than industry insiders/domain experts. In other words, an outsider can recognize a potential solution by translating his/her experience with an efficient solution from a different industry.
He is saying that you need to properly understand things from the perspective of an industry insider before you declare that your solution is disruptive. In other words, you need to understand why things are the way they are before talking of reformation. This is the central lesson behind Chesterton's famous "Taking a Fence Down" [0] quote.