Wall Street Journal
Businesses periodically try to rein in travel expenses. But as Jay Sorensen, president of consulting firm IdeaWorksCompany, points out, this often gets resolved with loopholes. Over the past decade, many carriers phased out first-class seats, which businesses were increasingly reluctant to pay for, and instead made business class more expensive and lavish, including lie-flat seats and in some cases enclosed personal cabins. Premium economy then took the place of the old business class and bridged the price gap.