Markets & Economy Nvidia Is Backstopping AI Boom as ‘Buyer of Last Resort,’ Prominent Economist Tells ‘Prof G’ September 4, 2026 · 4:41 pm 1 sources Image: Yahoo Finance ad slot · in-content video 16:9 Coverage More coverageNvidia Is Backstopping AI Boom as 'Buyer of Last Resort,' Prominent Economist Tells 'Prof G'Yahoo Finance · September 4, 2026 16:41