Press reports suggest that the restrictions on Huawei equipment may morph into a full ban, with new installations stopping soon and existing equipment to be removed by 2029.

The direct ‘tear-out’ and replacement costs for mobile would be very high at up to £2bn, and there would be significant disruption to 5G roll-outs as operators’ focus moves to replacing what they already have as opposed to pushing into new coverage areas.

Previous rules applied to fixed line broadband networks with as much force as mobile; having to replace Huawei broadband kit would almost certainly delay the move to ‘full fibre’, for no good reason even according to the government’s own report.

Recorded music revenues in Japan are stuck in decline as physical sales sag, although 2017 marks the first year when streaming gained a foothold with 8 million subscribers. 

J-pop fans spend on 'experiences' with their idols including events, merchandise, CDs and DVDs, which streaming cannot replicate. Top native LINE MUSIC offers integration with a popular messaging app and bundling with mobile. 

Serving international repertoire, Apple Music claims more subscribers than Spotify in Japan, which is more localised, and has most users on the free tier. Amazon Prime Music is a looming constraint on the adoption of subscriptions. 

Audiobooks are growing fast, driven by smartphone adoption and better supply, as well as interest from people who don’t usually buy books, such as young men

The sector is dominated by the presence of Audible, Amazon’s audiobook publisher/retailer, which has driven growth of audiobooks but put publishers under pressure. Its strategy is a lesson in Amazon’s approach to media

Audio is an opportunity to sell to new customers, but publishers must acquire and use rights responsibly, and experiment while not letting the audio tail wag the print dog