Data compiled by US analyst Jack Myers suggests tech platform revenues are being hit hard by retailer media’s rise – and the softness in TV markets is no coincidence. Australian market dynamics differ, but Citrus Ad founder Brad Moran reckons Coles and Woolworths “could dominate the entire ad market if they wanted to”. Agency execs think search and social have more to worry about than TV networks. But some experts think the looming privacy overhaul – and ensuring compliance costs – may curb some retailer enthusiasm to monetise loyalty data via retailer media networks, while blowing a hole in the economics of loyalty programs themselves.