This ignores a large volume of low stakes business lunches and dinners and the propensity of business people to turn debriefs and meetings into leisurely lunche

This ignores a large volume of low stakes business lunches and dinners and the propensity of business people to turn debriefs and meetings into leisurely lunches. I've been to many lunches and dinners like this and they feel like more of a psychological break than eating lunch in the common room. Plus the company pays. If you're closing a high stakes multi-billion dollar deal with Boeing then you should count that as work, definitely.