Trade with richer countries

From the NYT:

The promise was empty. The talks imploded in April when big trading nations failed to agree on a deal to reduce tariffs. While hope remained that a narrow package of benefits for the least-developed countries could be rescued from the process, that hope collapsed this month when the leading traders refused to see beyond their interests and failed, again, to reach a deal.

Much of the blame for this disaster rightly falls on the United States. But all big trading nations should give more.

At the end of the day who suffers the consequences?