Wrong. The numbers stated are given within the context of business hours for a retail operation against the normal hours and days of other similar stores where closures during evenings, weekends or holidays are typical. When someone says 24/7, it means 24 hours per day, 7 days per week. It does not, by definition, take into account holidays, leap years, emergencies or bankruptcy. This configuration only refers to the number of hours and days up to one week in duration, and not to how many days or weeks per year. After all, a business could be in operation 24/7 on a seasonal basis (e.g. northern oil drilling rigs). To properly infer the number of days or weeks per year, additional information regarding annual operation is needed, in the form of a third figure: 365 (and this would not apply to leap years).
Therefore, 24/7/365 is accurate and complete as stated. We can allow for a slightly loose interpretation of the figure 365, in which a store might close for a holiday once a year, or for inventory, or an emergency. But even if a store followed the 24/7/365 policy strictly, it would be accurate only for every 3 years out of four.