The market for addressable TV looks constrained despite its benefits, with Sky AdSmart taking less than 2% of overall TV ad revenues. Meanwhile, online video revenues for Google, Facebook and others have surged dramatically

Agencies are seemingly enraptured by online video – a highly profitable medium to buy – despite concerns about a lack of effectiveness, safety and transparency 

For broadcasters to compete, better radical collaborative action is needed, including industry-wide adoption of AdSmart, and overhauling the trading agreements which hinder its take-up

Even with the decline in linear television viewing, online video remains a small component of total video consumption. The growth area is unsurprisingly SVOD; subscription video now makes up about two thirds of the UK's digital video spend.

Netflix is moving from an aggregator of content to a "channel" in its own right, increasing proportionate spend on original programming, something that the public service broadcasters are unable to do for differing reasons. Amazon had a tough 2017 for video, and are still struggling to create a hit.

New Nielsen audience data suggests that the long-term "library value" of Netflix's originals may be overstated, while the BBC's iPlayer continues to be hampered by not really having a library at all.