> Is it because they need more stuff? Or is it because their brains are under near-constant assault from a barrage of advertising that melts their willpower and creates a link between having a free moment to themselves and consumption, a desperate instillation to keep up with the Joneses?
Generally, increasing incomes in developed countries lead to increased service consumption or at most indirect manufacturing. While some of this is "keeping up with the Joneses", I think a lot of it is just rational time valuing.
e.g. I've found that as my income has gone up considerably in the last half-decade (several hundred percent), I am spending more - but not on buying more goods. Generally it is bucketed under:
Spending more to save more time (increased value of time):
* online grocery shopping
* spending more to live close to work
* use of more expensive cab-services (lyft/uber) rather than public transit or biking
* flying direct rather than multi-stop.
* Spending more on childcare to maximize time spent on more intellectually stimulating endeavors (including work) or at times traveling
Higher quality:
* higher end food and restaurants
* more expensive travel options (distance/exotic)
* larger housing units to feel less cramped that also offer time-saving amenities (in-unit laundry, gym/pool, 24/7 package delivery)
I'm getting more leisure -- and directing a lot into the GDP numbe.