Martin Sorrell airs his grievances with holding companies (again)

The problem with holding companies is their inability to change, said S4 Capital Chairman Martin Sorrell, and the former longtime chief executive of WPP Group. He spoke on a panel moderated by Ad Age Editor Brian Braiker at the DPAA Video Everywhere Summit in New York today.Sorrell described the state of holding companies, which he said are too focused on the declining traditional media sector, as “catastrophic.” “You look at the industry and in the fir