Well, what if the idealists convince many of the men in the industry that the culture is terrible, but instead of trying to "tear down the cultural norms", they

Well, what if the idealists convince many of the men in the industry that the culture is terrible, but instead of trying to "tear down the cultural norms", they simply leave? I mean, what if people say "yes, this is true, this is all correct, the geek culture sucks, and I can simply walk away"? Who is going to reform it then? Did those who left do the wrong thing?