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TLDRocket
7 August 2026
The cost mathematics of AI are finally catching up with the hype. While UK venture capital is flooding into AI—$12.6 billion, or three-quarters of all British VC funding in the first half of 2026—the companies capturing it face a structural profitability crisis. AI products average 52 percent gross margins compared to 75–85 percent for traditional software, a gap that widens as companies scale. The fastest-growing firms reaching $100 million annual revenue in 18 months operate at roughly 25 percent margins, with inference costs rising from 20 to 23 percent of total spending as they mature. This economic reality is forcing founders and boards to treat infrastructure as capital allocation, not engineering preference—a particularly acute challenge in the UK, where data centre capacity and power constraints impose months of planning overhead.
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