Given ADD-DUB is a tiny market and the while point of this is to link ADD-LAX, the only way it's gonna make money is for the ADD through traffic to be high and the DUB-LAX joining to be as small as possible.
Ethiopian Airlines should be a puddle in an Ireland-US sea, if they're selling cheap p2p in that DUB-LAX sector, they've got their sums wrong. Aer Lingus should not quite be rendering the garments just yet.