That is their theory, but I see a lot of trouble in their analysis.
A different take on their data is:
Not doing things is becoming ignorant and in the short term ignorance of the negatives in life is bliss. In the longterm, not knowing how to do the things that are happening so you can survive is a larger stress for people. Consequently, people are happy when they are choosing to outsource, but it does not last and they choose to cycle back. The noveau rich outsource willingly and the other rich outsource more reluctantly as they are more familiar with the eventual costs of short term stress reduction.
A different take on their data is: Not doing things is becoming ignorant and in the short term ignorance of the negatives in life is bliss. In the longterm, not knowing how to do the things that are happening so you can survive is a larger stress for people. Consequently, people are happy when they are choosing to outsource, but it does not last and they choose to cycle back. The noveau rich outsource willingly and the other rich outsource more reluctantly as they are more familiar with the eventual costs of short term stress reduction.