[bluetomcat]

> I'm more curious as to _why_ our decisions become dominated by one factor as we approach abundance.

I would speculate that it comes down to the availability of too many different "classes" of products and services, which are often self-exclusive. There is only so much time in a day to consume a limited amount of these products and services. People's time and attention span is the limiting factor.

Let's say that you are in the market for entertaining yourself in some way. You can entertain yourself by riding on a rollercoaster, by watching movies, by driving a sportscar, by hiking, by doing photography. There is too much choice, and you eventually pick only one or two of these activities and they eventually become your "favourites". You become addicted, you prefer buying only high-end, specialised equipment, and you skew the market of that product accordingly.