It's a big community with a wide range of perspectives, but not so big that it can't be understood. To me the original community was mostly over a decade or two. This is similar to other communities such as a burgeoning genre of music. Whatever it was, it was established long before the words "Business Source License" were uttered. The first date range that comes to mind is 1993 to 2003 if it's one decade, or 1990 to 2010 if it's two decades. With the smaller range, you have the development of Linux, and the way Linux took over servers. With the larger range, there is Firefox taking on IE, as well as WordPress, Django, and Ruby on Rails becoming popular.

Even people who tried to fight it understand it. That is why before the deliberately misleading strategy being used now, some who wanted to promote code that could be read but couldn't freely be used settled for calling source available.