When American Express Global Business Travel last month announced plans to go public during the first half of this year via a merger with a blank check company, it noted a set of "most relevant" publicly traded peer companies. These included the only public travel agency firm totally focused on business, Australia-based Corporate Travel Management, as well as Amadeus and Sabre. The list also included six business services companies — ADP, Cintas, Ecolab, Genpact, Iron Mountain and Paychex. The selections contribute . . .