It seems to me that the big flaw with VC is that the VC-ists who promote it discount the real issue of motorist harassment and how real people feel about it. They offer in response to those who have experienced harassment, or who simply express concerns that they may experience it, at best pooh-poohing and at worst outright ridicule with phony diagnoses of mental illness, phobias, tauntings that they are superstitious, and insults that they have low IQs and reading comprehension problems.
It's a classic case of something actually well-made being sold by the engineers who made it and not the marketers who know how to sell something.
Can you guys not see that placing those with whom you disagree into your "enemies" camp, or discrediting their concerns, or tossing out only "facts" (such as they may be) without understanding the way people are moved emotionally -- and in fact, discrediting all emotion as weakness and stupidity -- is the real reason for your failure to gain market share?
You need to quit the insults, quit believing that "data" and statistics is the only meaningful measurement of value, and start figuring out a way to work vehicular cycling principles into the existing network of on-street cycling facilities. Otherwise you are doomed to failure. It's time for new packaging, new messaging, new ideas.