I don't know, seems to me that 4 of 7 commercials are from executives of East Coast companies...
Oracle - Redwood Shores, CA
Coca Cola - Atlanta, GA
PetsMart - Phoenix, AZ
Lawyers' Committee for Civil Rights Under Law - Washington, DC
BriarTek - Alexandria, VA
Cold Stone Creamery - Phoenix, AZ
DHL - Plantation, FL
Advertising nationally costs more money than the executive suite feels the revenue it would generate is worth, which cannot be tracked quantitatively. These commercials play during sponsored events (i.e. Diamondbacks, Cardinals, and Eagles games). They are targeted to a specific, business-oriented market to highlight US Airways' differences in product to generate positive brand recognition in monopoly markets.
And you can bet that DL will be none to happy that Coca Cola is appearing in a US ad.