I think that there is a whole generation of American geeks that don't understand the basics of beer, are wowed by the whale, and as such are likely to get bored and move on as the fad fades for them. In terms of finances, effort and time, perusing such things in perpetuity is unfeasible for many, as work, children, money and life get in the way. As a result, it's entirely possible that the American scene will lose a large cadre of beer drinkers, and the underlying sub-culture will be depleted/damaged. That's to say nothing of the brewers that are neglecting to perfect simple styles, techniques and sustainable production at the expense of the next limited release.