Nouriel Roubini — the economist known as "Doctor Doom" for his prescient warning of the 2008 financial crisis — has abruptly flipped from bearish to bullish. He now predicts that artificial intelligence (AI) will ignite a prolonged global economic expansion, with the United States and China as the prime beneficiaries. Speaking at the Greenwich Economic Forum in Hong Kong in April 2026, Roubini declared that AI is no bubble but a durable growth driver for the next 10 to 20 years.
From 4% to 10%: Roubini's AI Growth Timeline
Roubini laid out a steep acceleration path: U.S. annual GDP growth could hit 4% by 2030, rise to 6% by 2040, and reach 10% by 2050 — all fueled by AI-driven productivity gains. He argued that this trajectory is largely insulated from geopolitical shocks, including the ongoing Middle East conflict. "Over the medium term, technology dominates, but we can cause a lot of damage in the short run by doing lots of stupid things," he said. Roubini singled out the U.S. and China as the key innovators in AI and semiconductors, reaping the largest rewards. He dismissed earlier fears that AI might be a speculative bubble, emphasizing that the technology's evolution is fundamental and sustainable.
'Even Mickey Mouse as President Wouldn't Matter'
In a striking departure from conventional wisdom, Roubini downplayed the role of political leadership. According to the South China Morning Post, he remarked that even if "Mickey Mouse" were U.S. president, the economy would keep growing because the American tech sector possesses its own intrinsic dynamism. This view directly challenges the importance often assigned to politicians in shaping long-term economic outcomes. Roubini did acknowledge that short-term policy blunders or populist moves could cause harm, but not enough to derail the AI-driven productivity shift. His overall tone at the forum was clear: amid global pessimism, AI offers a rare source of predictable growth that can overpower climate change, geopolitics, and populism. For crypto markets, Roubini's newfound optimism is notable — he has previously slammed Trump's crypto policies as "clueless and venal" — but whether his AI bull case extends to digital assets remains an open question.