Online reviews are a vital input for consumer decision-making. However, reviews are easy to manipulate, and widespread fraud is undermining credibility and raising the issue of consumer protection.

Facebook, Google, and Amazon utilise reviews to improve the consumer experience, but also to sell advertising to businesses and to address fraud. These companies leverage their data superiority to better utilise reviews on their platforms, and possess a competitive advantage, versus sites like TripAdvisor, Yelp, and eBay.

Demand for expert opinion remains strong, yet is supplied only by publishers and Which?, a small segment in terms of share of traffic relative to platforms.

With sport at the heart of the pay-TV ecosystem, dedicated online-only streaming services could emerge as a threat to leading players like Sky 

The liveliest newcomer, DAZN, launched in 2016 with mostly second-tier sports. Now in seven markets and counting, it has recently made bold moves into top-flight competitions, notably in Italy, albeit as a secondary player 

History has not been kind to those challenging pay-TV incumbents by selling sports unbundled—particularly in Europe, as Setanta, ESPN, beIN SPORTS and Mediaset can testify. If DAZN can stick to secondary positions in premium rights, or simply less-expensive sports, perhaps it will fare better