The private clubs that we owned we did have advisory boards. Some of our clubs had multiple boards - greens, social, etc. Some just had an executive board. It just depended on what the members wanted, and generally what was in place prior to us taking over. The GM, super, and I had made all final decisions, but in general we tried to do what they asked. Take the greens committee - we did the vast majority of what the members wanted to do - they are the ones that played every day and knew better than I what needed to be done. What we took out of their hands were things like budgeting, equipment purchases, and capital projects. Members are not experienced in those areas and I am. Not all privately owned clubs use boards like that, and I can't say if Concert does or does not, and it may vary by club for them as well. I found the boards to be tremendously valuable, as they knew a lot of the history of the club, and provided a very clean and efficient way of communicating with the membership as a whole. But that's just me.
As Mike says, times are changing. Fewer people have the time to commit to a board, plus it's now a grind with stress and a lot of big decisions which can really impact the future of the club. It's no longer just a free meal a month and the chance to add a bunker.