For over a decade, the set top has defied predictions of imminent expiry into software but at last there are signs of that coming to pass. However, the death will be drawn out for another decade during which there will be significant rationalization in the number of viable operating systems. Android TV, RDK and a handful of other specialist smart TV OSs will come to the fore, mostly at the expense of generic Linux variants, plus a new entry out of China in Huawei’s Harmony OS. This will benefit from the US China trade war, surging to take 28% of the set top OS market there by 2025, holding Android back at 14%. Elsewhere, Android will take almost a third…