Then why other operators are not doing this long-haul nonstop route? This flight plan has been proven successful for Air India, they run it thrice a week at 88%

Then why other operators are not doing this long-haul nonstop route? This flight plan has been proven successful for Air India, they run it thrice a week at 88% occupancy. Now, they'll be flying this route daily[1]. [1] http://economictimes.indiatimes.com/industry/transportation/airlines-/-aviation/air-india-to-now-fly-daily-from-delhi-to-san-francisco/articleshow/53590740.cms http://economictimes.indiatimes.com/industry/transportation/...