Stratechery's week: Meta vs. Amazon, and GM's CarPlay about-face

Platforms and aggregators: the agent on Amazon, and the fight over the dashboard

Stratechery: "2026.39: Begun, the Aggregator Wars Have"

1. The roundup's frame is that the week's big platforms spent it fighting each other rather than their suppliers. Its lead pick points back to the September 22 Update on Amazon blocking Muse, Meta's personal agent. The argument, in the roundup's words: an agent earns its keep on the necessary, annoying errands, and Amazon earns its keep delivering exactly those, so Muse works better where it can use Amazon — and Amazon blocked it because "Muse doesn't see ads." Amazon can hold that line because its advantage sits in warehouses and trucks rather than in software; "their differentiation is rooted in the physical world," the roundup writes, and the way around it runs through one company in particular, Walmart. 1 The same week's Sharp Tech episode carries the label in its own title, "A King Kong vs. Godzilla Aggregator War."
2. The one fresh pick is a retreat: GM has put Apple CarPlay back in the dashboard. Three years ago GM said it would strip CarPlay and Android Auto out of its cars in favour of a Google-based system built into the vehicle, a move meant to keep the driver data and the subscription revenue that come with owning the software layer. Sharp, who writes that he expected the decision to cause no trouble while his colleague Ben Thompson was "incensed at GM's myopia," spent Tuesday's Dithering episode on why the reversal was inevitable. GM's new infotainment interface folds phone projection back in beside its own apps, and it debuts on the 2027 Chevrolet Silverado and GMC Sierra pickups. 1 The backlash it answers is documented: surveys at the time found that 79% of new-car buyers would consider only a vehicle that offered CarPlay, and dealers warned that shoppers would walk to a rival showroom. Ford kept CarPlay throughout. 5
3. The rest of the email is the week's index. 2026.39 also lists everything the bundle ran in the week of September 21: Sharp's Sharp Text essay "Too Many Stadiums with Roofs," on a new Washington Commanders stadium and what he calls a modern epidemic; two Dithering episodes with Daring Fireball's John Gruber, "GM and CarPlay" and "Muse Delivery Vehicles"; two Asianometry episodes, on Intel's Optane memory and on high-bandwidth flash; a Sharp China episode on Xi Jinping's Washington visit, the US–China agenda and the September Politburo meeting; a Greatest of All Talk episode; the Sharp Tech episode "Three Weeks of Meta Momentum, The Ultimate Muse Upside, A King Kong vs. Godzilla Aggregator War"; and the week's Sharp Tech video, Why Can't Anthropic or OpenAI Unilaterally Slow Down?, which anyone can watch. The email itself is free; most of what it indexes sits behind the subscription. 1

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