AI sector faces harsh realities as costs rise and profits lag

Investors are reassessing the artificial intelligence business model following reports that high costs, slower-than-expected returns, and expensive financing are challenging previous market assumptions. Broadcom’s weak forecast wiped $444 billion from its market capitalisation, contributing to a Nasdaq sell-off described as its worst day in 14 months. While AI technology remains promising, the commercial side is viewed as increasingly difficult, with major companies raising capital through stock sales to fund expansion.

Four specific "harsh realities" facing the AI business were identified: AI infrastructure is too expensive; returns are lagging behind expectations per a new Bain study; infrastructure demand is strong but below the most optimistic forecasts; and financing costs remain high with signs the Federal Reserve may raise, rather than lower, interest rates. These factors challenge the assumptions that powered markets to historic heights, raising questions about the sustainability of valuations for chip and memory stocks that have risen more than 1,000% in a year.

Broadcom reported a robust 48% year-on-year revenue increase to $22.19 billion and adjusted earnings per share of $2.44, exceeding analyst expectations. However, shares fell due to the lack of an upward revision to its fiscal 2027 forecast for custom AI chips. The company’s tepid outlook erased $444 billion from its market capitalisation over two days, highlighting the gap between current performance and the high valuations previously assumed by the market.

The broader market experienced significant friction, with the S&P 500 down more than 2% despite many individual stocks rising, a pattern last seen during the dot-com bubble collapse in April 2000. Major companies, including Microsoft, are reportedly rushing to sell historic amounts of stock to fund AI expansion, raising concerns about dilution. Brian Jacobsen, chief economic strategist at Annex Wealth Management, noted that while some areas are "priced for perfection," other sectors still offer reasonable expectations and valuation cushions.

Asian stock markets are expected to open on Sunday evening (US time), which will indicate whether investors are reacting with panic or opportunism to the recent sell-off. The SpaceX IPO, potentially the largest in history, is expected this week, with early signs suggesting the offering is oversubscribed, which may create demand for the stock. Every great new technology has its moment where the business behind it resets, even as the tech itself keeps advancing.