Evidently, these CIOs don't travel much
Anyone who does any type of travel for a business, even if it is just away from the office to a client site, can appreciate the weight savings of an Ultrabook over a traditional notebook. They can fit inside a briefcase or large purse, together with a tablet and some papers.
As for "insufficient power," these things have Ivy Bridge processors. How much power do you need to run PowerPoint, Excel, Word, and the corporate Intranet?