The industry isn't measuring itself. If the individual business people involved in your industry aren't measuring themselves, how will we ever get those answers back regardless? That's maybe a rhetorical question.
But if we asked the questions you just asked, 80% of the people would not know the answer. They're not measuring it in their own businesses.
It really does come back, from a business management point of view, to suggest that the success is there, but the measurement needs to be done. There has to be a measurement, or we can't tell.