Bezos also used his appearance at Europe's largest tech expo VivaTech Paris to outline his long-term vision for space exploration.

He described space as "supply constrained, not demand constrained", arguing that access to space remains the biggest obstacle to future development.

The Moon, he said, offers a natural starting point for humanity's expansion beyond Earth because of its proximity and resources.

"We're going to the Moon to stay, not just to visit," Bezos told the audience, adding that technologies such as electrolysis could eventually allow lunar resources to be used to refuel rockets and support a permanent presence beyond Earth.

The discussion also turned to another Bezos venture, space travel company Blue Origin.

It had a recent setback after an uncrewed New Glenn rocket exploded during a ground test at Cape Canaveral in Florida in May.

"It was a gut punch for the whole team. But what we've learned since then is we got really lucky," Bezos said.

No injuries were reported in the explosion, and Bezos noted several critical pieces of launch infrastructure survived the incident, including propellant and fuel systems that would have taken significantly longer to replace.

On the same stage as Bezos, Blue Origin chief executive Dave Limp said reconstruction work at the launch site is already underway and the company expects launches to resume before the end of the year.

Blue Origin is in the race to establish itself as a major player in commercial spaceflight and lunar exploration, competing with Elon Musk's SpaceX in the growing market for extraterrestrial infrastructure.