Kenneth Glad
Huge private fortunes are forcing governments to confront old questions in a new form. The issue is no longer only what one person owns, but how far that ownership can reach.
Musk’s fortune reached about $1.1 trillion after SpaceX’s initial public offering, turning a figure usually reserved for national economies into a personal net worth.
The number is difficult to translate into ordinary life. Forbes compared $1 trillion with US defense spending and Medicare spending, and also showed how the same sum could cover medical debt, groceries, childbirth, childcare and college costs for millions of Americans.
That is why the milestone has become more than a business story. It arrives as governments face anger over living costs, stretched public services and tax systems that many voters already believe favor the richest.
In a column for The Guardian, economist and philosopher Ingrid Robeyns argues that Musk’s fortune should not be treated only as proof of innovation. She warns that wealth at this level becomes a form of private power.
Tax rules are under pressure
Gabriel Zucman, in a blueprint commissioned by Brazil’s G20 presidency, proposes a coordinated minimum tax requiring billionaires to pay at least 2% of their wealth each year. He estimates that such a rule could raise $200 billion to $250 billion annually from about 3,000 taxpayers.
Zucman’s point is that ordinary wages are taxed when earned, while billionaire wealth often grows through shares, unrealized gains and corporate structures that income tax systems struggle to capture.
Oxfam has made a related argument, citing IMF research to say that making the richest richer does not reliably produce stronger growth for everyone else.
Opponents of wealth taxes warn that governments could face valuation disputes, avoidance strategies and capital flight.
Zucman’s answer is coordination: If countries act together, billionaires have fewer ways to play one tax system against another.
Other countries show the stakes
The issue is not only American. The Risks of Extreme Wealth report by Good Ancestor Movement and Patriotic Millionaires UK describes a Dutch example involving Shell and Unilever lobbying over dividend tax policy, showing how corporate power can shape decisions before voters ever debate them.
That example gives the Musk debate wider meaning. Extreme wealth does not need to buy votes directly to influence democracy. It can work through access, lobbying, ownership, legal advice and the threat of moving money or business elsewhere.
The same report identifies democracy, media, law, the economy, social cohesion, equality and the environment as areas exposed to harm from extreme wealth.
Its authors argue that these risks do not operate separately, but reinforce one another when money buys political access, media influence, legal protection and market power.
The report frames extreme wealth as a systemic issue rather than a private lifestyle choice:
“Ascertaining the point at which extreme wealth causes harm is vital to address and reverse its impact on our shared systems, societies, environment, and human experience.”
Success still has its defenders
Musk’s supporters see a very different story. They argue that vast fortunes can reflect vast risk, and that companies such as Tesla, SpaceX and Starlink have produced jobs, technology and infrastructure with global impact.
That argument matters. Many voters do not oppose wealth created through invention or business success.
They object more strongly when wealth appears to buy political access, avoid taxation or close markets to competitors.
The harder question is therefore not whether founders should be rewarded. It is whether any private fortune should grow large enough to influence elections, media platforms, regulation and public priorities at once.
Markets can bend around giants
Concentrated wealth can also reshape competition. The Good Ancestor Movement and Patriotic Millionaires UK report warns that dominant firms can absorb rivals, control markets and make it harder for smaller businesses to challenge them.
Media is one of the clearest pressure points. Musk’s ownership of X, formerly Twitter, shows how one wealthy individual can control a platform used by politicians, journalists, activists and voters.
That does not mean every decision by a billionaire owner is automatically harmful. But it does mean private control over major communication systems has public consequences.
Climate sharpens the debate
Environmental concerns add another layer. The report from Good Ancestor Movement and Patriotic Millionaires UK argues that the richest people consume far more resources than average citizens and often hold investments linked to high-emission industries.
Supporters of billionaire wealth may point to philanthropy or green investment, including Musk’s electric vehicle business.
Critics reply that voluntary action cannot replace taxation, regulation and democratic decision-making.
The trillionaire milestone has therefore become a test for governments. They can treat it as proof of economic dynamism, or as evidence that public rules have fallen behind private wealth.
Either way, Musk’s fortune has changed the scale of the argument. The next fight over inequality will not only be about poverty. It will be about how much power any one fortune should be allowed to carry.
Sources: The Guardian, Forbes, Oxfam International, Gabriel Zucman’s G20 taxation blueprint, Risks of Extreme Wealth report from Good Ancestor Movement and Patriotic Millionaires UK.
