http://www.crinfo.org/articlesummary/10594/

Bushman society is fairly egalitarian, with power being evenly and widely dispersed. This makes coercive bilateral power-plays (such as war) less likely to be effective, and so less appealing. A common unilateral power play is to simply walk away from a dispute which resists resolution. Travel among groups and extended visits to distant relatives are common. As Ury explains, Bushmen have a good unilateral BATNA (Best Alternative to a Negotiated Agreement). It is difficult to wage war on someone who can simply walk away. Trilateral power plays draw on the power of the community to force a settlement. The emphasis on consensual conflict resolution and egalitarian ethos means that Bushmen communities will not force a solution on disputing parties. However the community will employ social pressure, by for instance ostracizing an offender, to encourage dispute resolution.

Please explain to me how Bushmen picked up the above from industrialized society. It strikes me as highly unlikely that this pattern of behavior didn't predate the industrial era.

Did you consider precisely what you were objecting to, or was this a knee-jerk reaction to a general category?