If you have got a lineup of 5 or 6 people, you are not going to serve them well by doing a 4 min press pot for each ... or a 6 - 15 minute OTTO process. They get a 26 - 28 second double shot and, if desired, another 15 - 20 seconds for milk; all under a minute, including swirling and pouring.
As a cafe owner or barista, espresso and espresso drinks is about speed of service.
The origin of the term "espresso" is the subject of considerable debate. Although some Anglo-American dictionaries simply refer to "pressed-out" (rooted in the Latin origin of the word), "espresso,” much like the English word "express," conveys the sense of "just for you" and "quickly," both of which can be related to the method of espresso preparation.