The Billion Dollar Tax on AI Agents

I want to walk you through a number that I keep coming back to, one that I think deserves more attention than it gets. The number is somewhere between one billion and five billion dollars per year. That is our estimate of how much the AI industry spends, collectively, processing web page markup that no agent will ever use. Not because the agents are inefficient. Not because the models are wasteful. Because the web serves content in a format designed for human eyes, and agents are paying the full cost of that visual presentation layer every time they read a page. Let me show you where this number comes from. Start with a single web page Pick any web page. Go to your favorite news site, an e-commerce product page, a documentation site, a government portal. Right-click, view source. What you see is HTML: a mix of content (the text, the links, the headings) and presentation (CSS classes, inline styles, layout containers, tracking scripts, ad markup, SVG icons, data attributes). The HTTP Ar