Japan Airlines has chosen to stay hitched to American Airlines and not bolt to Delta. In a way, Delta may still come out a winner. Though the details are not yet out, Delta's courting may well have forced American and its Oneworld allies to pay upwards of $1.4 billion just to hold on to their existing partner in Japan. Neither American nor Delta is flush with cash. To see them fall over each other to partner with a bankrupt Japanese airline speaks volumes about the importance of business partnerships in airlines and many other industries. Delta knew that it could both strengthen its hand and…

