Skip to navigationSkip to main contentSkip to right columnCaleb NaysmithMon, June 29, 2026 at 6:03 PM GMT+2 3 min readEvery boom has its believers. The smartest investors also spend time thinking about what happens if the story falls apart. That's precisely where Mark Cuban went on X June 26, laying out what he believes are "multiple ways" today's AI race could unravel if the public starts viewing leading models as "toxic." Yet even after walking through the bear case, he arrived at the same conclusion: he's still bullish on AI.The Bubble Risk Nobody Wants to Talk AboutResponding to a critic on X, Cuban argued that the companies leading the AI race are spending extraordinary amounts of money because they fear the industry could become a winner-take-all market, much like internet search.More News from BarchartBillionaire Mark Cuban Asks If AI 'Collapses' And Data Centers Turn Into 'Chuck E Cheeses,' Would That 'Create A Revival Of Jobs?'As Trump Doubles Down on Quantum Computing, This Is the Top-Performing Stock to Buy YTD