Sorry, I assumed that that was where you were coming from.
Economies of scale usually refers to how the cost of producing a unit decreases as you are producing more units at a time.
Taleb calls an endeavor scalable if your reward can increase practically unboundedly with little no extra effort. Examples include pop stars and websites.
Btw, Wikipedia seems to be more or less in agreement with my stand here: [http://en.wikipedia.org/wiki/Economies_of_scale] "Economies of scale are the cost advantages that a firm obtains due to expansion. Diseconomies of scale are the opposite. Economies of scale may be utilized by any size firm expanding its scale of operation."
OK! It seems I missed the cost advantage part; i.e., the term "economies of scale" is used only if there is a cost advantage to be gained from expansion. Is that right?