That doesn’t mean all or most of the people buying coffee are doing it every day— as you said, lots of coffee in the office. I work (US) where there is similar

That doesn’t mean all or most of the people buying coffee are doing it every day— as you said, lots of coffee in the office. I work (US) where there is similarly a selection of places to get coffee right out the door, and they are almost always busy, but most people I know are not using them every day. A rough estimate based on the # of people working in the immediate 5 minute walking distance and rough estimate of time needed to order and crowd size— I’d estimate they sell the equivalent to one cup to between 5-10% of the population every day. A slightly smaller % of actual people since some will buy more than 1 cup. In contrast, nearly everyone I know drinks coffee, or tea. They’ll buy a coffee when they really want to get out of the office rather than a few minutes away from their desk, or want to treat themselves to a higher end coffee than drip or weak pods.