[staunch]

> The open-office concept was designed by executives who have their own private offices.

Or they technically also use open office desks but spend little of their time at them, and the majority of their time commandeering conference rooms, using executive-only meeting rooms, staying at expensive hotels, resorts for "offsites", working from home, and the like.

The few days they spend per year doing non-focused work in an open office environment is probably enjoyable enough, and helps them rationalize torturing everyone else.