Earlier quoted context omitted.
> has not shown to create functional long term societies that are resilient to exogenous threats. I don't think I agree with this. If anything, it seems more like the reverse: societies have been less-and-less willing to enforce assimilation and a certain set of society-wide cultural behaviors, and therefore they "fall back" to the rule of law as described by you.
As a melting pot, the US takes in a lot of folks from countries that are not doing very well... so in a way, if we keep importing folks from cultures that failed without trying to integrate them to our culture, and instead celebrate their original culture, eventually our amalgam culture will fail just like theirs did. Its why we have signs that say to "sit, not stand on toilets". You dont think we would need to write…
I think you may be thinking of the Candaian conception of a cultural mosaic.