Of course I'm speaking from theory in a vacuum. In the real world competitors don't always form immediately, it can take quite awhile. But the broad strokes ar

Of course I'm speaking from theory in a vacuum. In the real world competitors don't always form immediately, it can take quite awhile. But the broad strokes are true, and bear out over time, barring monopoly formation in a given sector, free information etc. Of course Costco does have competitors, they just haven't been able to execute as well up to this point.