Reminds me of Delta Air Lines' 2012 purchase of an East Coast oil refinery [1], a more refined :) take on Southwest's profitable fuel-price hedge last decade [2]. Both Emirates' and Delta's plays echo a comment I read yesterday about "identifying supply-chain components that can be [more] economically produced in-house" [3].
[1] http://www.nytimes.com/2012/05/01/business/delta-air-lines-t...
[2] http://usatoday30.usatoday.com/money/industries/travel/2008-...