Google’s advertising business has begun losing market share in the US, with competition from Amazon, Facebook and Microsoft intensifying in search and display

In response, the company is redoubling efforts to reshape its apps, services, and the entire web for more efficient monetisation, spelling uncertainty for partners and users

The adaptability and complexity of Google’s services reduce business risk from targeted regulatory measures, but increase the pressure for a radical intervention

After the most challenging period in its history since 2012, Facebook has been able to stabilise its fundamental metrics and announce a major product overhaul

Despite talk of a business model pivot, Facebook’s focus remains on advertising, whose growth will remain concentrated in developed markets

News publishers wishing to stay relevant on the upgraded product set need to target exclusive layers of social interaction, with groups particularly important

Apple is strengthening its household model by doubling down on family-friendly content subscriptions and payments

The model is reliant on hard bargains with mainly US partners, which risks sacrificing potential scale for a short-term boost in margin dollars

The new services offer glimpses of novel concepts, but stop short of taking risks to truly differentiate—a problem in TV, where Apple’s distribution advantage is slimmer than Oprah would have it

After strong underlying 2018 results, the more subdued outlook for 2019 is an important shift, driven by regulatory pressure on mobile, higher programming costs, one-offs and softening demand

Lightning is continuing to drive market share gains in new build areas, and should provide a 2ppt tailwind to revenue growth in 2019, but enhanced visibility on the economics of rollout suggests that its conservative approach is a wise one

In existing build areas, Virgin Media is facing-off pricing pressure from TalkTalk on high speed, and potentially from BT on even higher ultrafast speeds, with it moderating pricing and launching a market-beating 500Mbps product in Spring 2019 in response

Launched to the world in September 2017, TikTok is the first Chinese app to pose a serious threat to Western social media companies as it attracts hundreds of millions of Generation Z users around the globe

Privately-owned parent company Bytedance earned $7 billion in online advertising revenues in 2018 and is valued at $75 billion, placing it ahead of Uber as the world’s most valuable internet start-up, with an IPO likely this year

Bytedance’s goal of earning half its revenue outside China by 2022 is far from certain. In order to hit the target, TikTok will need to attain super scale with best-in-class revenue per user, an unlikely combination

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Amazon’s recent deals with Apple in TV, music and device sales mark a turning point after a decade of frosty relations

The context for this involves shifting priorities at both firms, growing pressure on Apple’s iPhone business, and rivals in common — first and foremost Google, but also the likes of Netflix and Spotify

The uneasy alliance helps both companies consolidate their strengths in the platform competition over media and the connected home — but trouble already brews