In the article, Paula Higgins is quoted as saying "the creation of Agents Mutual is all about protecting estate agents’ market share and nothing about helping homeowners get a better deal". She goes on to say "When selling your home from next year you won't be able to have access to all the portals because AM [Agents Mutual, the owners of OnTheMarket] is working it so that agents can only advertise a home with Rightmove OR Zoopla. That restricts the number of potential buyers homeowners can market their house to. This in turn will impact the speed of sale, and getting the right price. Another rotten deal for home owners that lines estate agents’ pockets."
Recently both Knight Frank and SpicerHaart have announced that they will be dropping Zoopla and favouring Rightmove as of next year. It will be interesting to see what Zoopla does to fight off this new competitor. It seems to have an ally in HomeOwner's Alliance.