With Donald Trump and Vladimir Putin absent and leaders unable even to agree a joint statement, some critics are questioning whether the annual APEC summit is still worth the effort.
"Expectations are low and probably won't be fulfilled anyway." That was the brutal if prescient pre-summit prediction of William Reinsch, an analyst at the Center for Strategic and International Studies.
And after all that, leaders came away with little more than three family photos and a loud shirt unlikely to be worn again.
The grouping was born three decades ago as a way of promoting trade liberalisation. But that cause has fallen out of vogue and Port Moresby was little more than a different venue for another China-US bunfight.
For the first time ever, the leaders failed to produce a joint summit declaration -– usually a technocratic exercise in fudging differences, overstating agreement and promising great things to come.
It is a heartbreaking result for host Papua New Guinea, which was making its debut on the international stage –- at no insignificant cost.
Prime Minister Peter O'Neill's government -- not much larger than a municipal authority in most developed countries -- visibly struggled with hosting such an enormous enterprise.
It dealt with more than 21 delegations, each numbering in the dozens if not hundreds who needed to be fed, housed and watered and ferried round a city not exactly designed for armour plated motorcades.
Papua New Guinea officials forgot to provide lighting for a leaders' photo opportunity, outside, at night and at another they put their own flag upside down.