The number that moved the market is not the total installs: 2.8 million is small next to the three billion people who use Meta's apps. It is the speed. Muse beat ChatGPT over the same post-launch period because almost everyone who installed it was already in the house: more than 95% use Facebook and 63% use Instagram. In two weeks, Meta turned a customer base built over more than twenty years into a new product.
In the same month, OpenAI and Google kept racing for the most capable model, with GPT-6 Astra and the new Gemini 3.8 family. The market priced these strategies differently: it was Meta, not whoever launched the most advanced model, that won the week on the stock market.
Amazon's block shows the limit of that advantage. An assistant that buys on the user's behalf gets to decide which store receives the order, and sellers have every incentive to keep that intermediary from standing between the store and the customer. Amazon had already sued Perplexity and blocked agents from OpenAI and Google for the same reason.