Elon Musk has accumulated more wealth, corporate influence and political power than almost anyone alive. Yet according to someone who once worked closely with him, none of it has brought the billionaire anything resembling happiness.

The extraordinary assessment appears in filmmaker Alex Gibney’s forthcoming documentary, Musk, which is scheduled to premiere this fall.

Gibney told The Hollywood Reporter that one of Musk’s former associates offered a devastating private description of the 55-year-old entrepreneur.

“He’s the most miserable man I’ve ever met,” the person reportedly told the director.

Gibney then advanced a darker interpretation: that Musk projects this unhappiness outward, using his enormous power to affect the lives of people far beyond his companies and immediate circle.

The statement cannot independently establish Musk’s emotional condition. It is one person’s assessment, relayed through the filmmaker rather than a medical conclusion. But it provides the unsettling central idea behind Gibney’s investigation of the world’s richest man.

The documentary reportedly examines Musk’s behavior, appetite for influence and unprecedented ability to shape American political life without ever being elected to public office.

His impact became impossible to ignore during the 2024 presidential election.

Musk spent more than $290 million helping Donald Trump return to the White House, transforming himself from a prominent technology executive into one of the campaign’s most powerful political benefactors.

He appeared at political events, organized town halls across competitive swing states and used X—the social-media platform formerly known as Twitter—to promote Trump and conservative causes.

At one event, Musk awarded a $1 million check to a randomly selected attendee who had signed a petition supporting a political action committee he created.

The spectacle captured the extraordinary intersection of wealth and democracy surrounding Musk: a private citizen using personal billions, a global communication platform and headline-grabbing giveaways to influence a national election.

After Trump’s victory, Musk assumed an influential role leading the administration’s Department of Government Efficiency initiative, commonly known as DOGE.

The operation relied heavily on a group of young technology specialists who entered federal agencies, examined government systems and pushed dramatic spending and personnel cuts.

Under DOGE, major USAID programs operating around the world were dismantled. Musk’s team also reportedly gained access to systems containing information involving tens of millions of Americans.

Questions remain about the scope of the data accessed, how it was handled and what long-term controls were placed on its use.

Those concerns become more significant when combined with Musk’s ownership of X, which already gives him access to immense quantities of information about users’ interests, behavior, communications and political engagement.

Gibney’s documentary appears poised to argue that Musk’s power cannot be understood by examining Tesla, SpaceX, xAI or X separately. Together, those companies and government connections place one unelected individual at the center of technology, national infrastructure, artificial intelligence, political communication and sensitive personal data.

Yet the alliance that helped Musk reach the heart of Washington did not last.

His relationship with Trump eventually disintegrated into a spectacular public feud. Reports suggested that Trump privately admitted feeling personally hurt by Musk after their partnership collapsed.

The billionaire attacked the president on X, making the unsupported allegation that Trump appeared in the Epstein files and claiming that this explained why the records had not been released.

Musk later deleted the post, but the accusation demonstrated how quickly a powerful political alliance could become a deeply personal public war.

The man whose financial support helped return Trump to office was suddenly using his own platform to launch an inflammatory allegation against him.

For Gibney, such behavior may reveal something beyond conventional political disagreement.

The filmmaker’s description suggests a portrait of a man forever attempting to fill an internal emptiness through another company, another confrontation, another technological gamble or another expansion of power.

That interpretation remains Gibney’s—and the anonymous former associate’s—not an established diagnosis of Musk’s mental state.

Still, it raises an uncomfortable question.

What happens when someone who reportedly feels deeply unhappy acquires enough wealth and influence to make that unhappiness consequential for entire institutions, governments and populations?

Musk’s fortune allows him access to nearly anything money can purchase. His companies reach into space, transportation, communication and artificial intelligence. His political spending can reshape elections, while his platform can elevate or bury voices before millions of users.

He can command attention with a single post and move markets with a sentence.

But the testimony at the heart of Musk suggests that none of those achievements has delivered peace.

The documentary will not ask viewers to pity the billionaire. It appears more interested in exposing the danger created when private turmoil, limitless ambition and largely unchecked power occupy the same person.

Elon Musk may possess more wealth than anyone else on Earth.

According to someone who worked beside him, he remains unable to purchase the one thing all that power was supposed to provide: happiness.