Mr. Trump called Jensen Huang, Nvidia’s chief executive, while Mr. Huang was onstage in Los Angeles and criticized calls to slow down and regulate A.I.

The state attorney general said in an antitrust lawsuit filed on Tuesday that the company was abusing its market power to keep its delivery costs low.

Amazon joined a procession of tech giants that ramped up their spending on artificial intelligence, as its capital expenditures soared 69 percent. Concerns over the industry’s spending are mounting.

The employees encouraged limits on the complexes in a series of hearings in the tech giant’s hometown, Seattle.

The LinkedIn co-founder was a key bridge to Microsoft’s relationship with OpenAI, but he also came with some baggage.

Jeff Bezos was gaining ground on Elon Musk’s SpaceX and Starlink. Thursday’s rocket explosion on a launchpad creates a major setback.