Mobile sector returns are low, particularly for smaller-scale operators, with H3G earning less than its cost of capital. Regulatory initiatives, spectrum auctions and 5G look set to worsen this picture as H3G strives to gain viable scale

Back-book pricing is crucial to the returns of fixed challengers. Regulatory intervention is likely to lead to a waterbed effect in the fixed sector and exacerbate challenges in mobile

New entrant business case in full fibre is limited to de facto monopoly opportunities. There is the potential for BT’s returns to increase markedly if it gets full fibre right but new entrants’ inferior economics are unlikely to offer sufficient investor appeal

Broadcaster video on demand (BVOD) advertising is in demand with an £89m rise in 2018 spend to £391m, and is predicted to double within the next six years

The rise of on-demand viewing has created a scaled advertising proposition with a strong 16-34 profile – a relief for both broadcasters and advertisers, given the long-term decline in linear TV impacts for younger audiences

Big challenges remain: linear TV ad loads look excessive in on-demand, BVOD CPTs can be off-puttingly high, and measurement is still unresolved. BVOD is a welcome bright spot which faces online video competition head-on, but it won’t be able to turn broadcasters’ fortunes around alone

Google’s Stadia promises the most credible game streaming service yet, but building a subscription bundle of top titles would require an all-out bet in the sector

Google is building its own game studios – to win over others it must overcome a troubled history in gaming, mitigating risks to developer business models and creative integrity

Games are much more technically demanding to stream than video, presenting an advantage to Google, Microsoft and Amazon – and a boost to telecoms network demand, welcomed by operators

Market revenue growth accelerated to 3% in Q4, but it might never reach this level again, being helped by a never-to-be-repeated BT overlapping price rise

With price rises becoming more challenging in general, and superfast pricing under pressure in particular, maintaining/increasing ARPUs is becoming more difficult despite superfast volumes surging

Openreach’s ultrafast roll-out has accelerated, challenging Virgin Media and bringing the prospect of further price premia, but perhaps too late to be of significant benefit in 2019