Qatar Airways owns a 49% stake in Air Italy and is attempting to revive what was once Meridiana into the dominant airline in Italy. With Delta partner Alitalia struggling, that seems possible. Although given Alitalia’s challenges, draining subsidies from Air France and then Etihad and the government of Italy the Italian aviation market isn’t a place that’s likely to produce profits. Delta sniffed around looking to invest in Alitalia, but no deal has been done.
US airlines don’t want to compete with Air Italy, though. They don’t want to compete with anyone, and there’s always a chance to go to the administration and complain about foreigners.