"The top 1% user is spending $903 per month on AI... The median is spending $25." a16z's Olivia Moore breaks down who actually pays for AI, under 5% of US consumers, with the top 10% of them driving half the revenue: "About half of Americans report using AI, and about 25% think they're interacting with AI on close to a daily basis." "The spending data is much more concentrated." "Our Yipit panel shows around 4.5% of US consumers are paying a subscription to an AI product. Some other sources…