Despite a massive surge in corporate AI spending, the technology is broadly failing to deliver the massive cost reductions executives had anticipated, according to a new global survey from Bain & Co. shared with Bloomberg. The largest share of major companies measuring their AI returns — 40% — realized cost savings of 10% or less, with poor access to internal data cited as the primary roadblock. Most had expected higher returns. More concerningly, Bain warned that many companies are using their original, overly optimistic projections — rather than their actual savings — to justify funding their next wave of expensive AI investments, creating a “circular bet with a structural leak.”