This is definitely not a big success. What we get from this mentality is billionaires hoarding resources and corporations destabilizing democracies. The law exists to establish rules of conduct for living in a civilized society, not for encouraging individuals to sort out their differences on their own.
> Strong group responses are actually quite destructive and squelch non-conformance. Anyone who might be unusually successful with an unorthodox strategy gets crushed. Ends really badly for minorities too.
Strong group responses can be destructive or constructive. Either one can benefit or harm minorities. Organizing into a group to accomplish a goal does not automatically mean that individualism is cast aside -- many social movements have existed to empower individuals.
> We don't want the teachers taking an extremely successful and tolerant society focused on individual action in context of a group and then inculcating group reactions in context of an individual.
It sounds like in this case study, the society in question was far from extremely successful and tolerant. The whole point of the exercise was to promote social harmony among students.