Daily Mail takes step back from Project Rio amid publisher doubts

The Daily Mail publisher has taken a step back from “direct involvement” in joint publisher initiative Project Rio amid a flurry of publisher concerns around the viability of its attempt to pool inventory from six media owners. 
The initiative, formerly by the name Project Juno but later rebranded to Project Rio, has been underway since the middle of 2017 when rival publishers decided to put their egos aside to tackle problems facing the print industry as an alliance.
However, a