I have just one datapoint that exemplifies a lot for me regarding US vs. 'other' airlines in the international market.

Last fall I didn't pay enough attention. I booked on UA SFO-PEK (because of alliance and E+). No significant price difference on dates/the route to tempt me to fly another airline. 11+ hours with overhead monitors? Are you kidding me?

Flew another itinerary, EWR-DEL. This time I checked. I'd flown the route 4 years earlier on CO and it had been great (in Y). I booked on UA, with IFE. Again, no significant price difference with other carriers to tempt me anyway. Tiny little IFEs, 9-channels on some kind of taped loop - when the longest 'channel' finished, the whole system was 'rewound' (FA's choice of words). That's aside from the fact that the offerings were the usual UA stuff - over half were children's movies (I have never seen an international flight made up of over half children).

If UA is going to put these lame products on international longhauls, one would think there would at least be a discount in the Y fare to reflect the seriously lame product offering.