That is true for time-based (eg. monthly) subscriptions, but not for the general repeat customer case. (Home Depot or Starbucks would have no timely idea if I suddenly decided to boycott them, while Comcast would.)
Right. I was going off the definition in the article that active customers are those that have performed an action within a time span, i.e. at the end of each such time span you can definitely count customers as "no longer active" or "still active... for now".
That is true for time-based (eg. monthly) subscriptions, but not for the general repeat customer case. (Home Depot or Starbucks would have no timely idea if I suddenly decided to boycott them, while Comcast would.)