An important aspect of the organizations you mention that isn't mentioned in the article is explicit profit sharing and co-ownership, not just options. This is

An important aspect of the organizations you mention that isn't mentioned in the article is explicit profit sharing and co-ownership, not just options. This is a feature that seems fairly at odds with the desires of VCs who often seem to do everything they can to dilute workers options pools. And also with wider investment market who often see employee ownership as a threat to the value of their investment capital.