As fortunes created in Silicon Valley and the AI boom swell to levels that rival historical concentrations of wealth, a familiar debate has resurfaced: should society rely on voluntary philanthropy or enforce redistribution through taxes and equity grabs? That question was recently framed bluntly by Danny Rimer, a co-founder of Index Ventures, whose firm has been a major backer of leading AI companies. Rimer says the windfall from AI will ultimately need to be shared — preferably voluntarily — a position that now collides with declining charitable participation and growing political momentum for one-off wealth levies.
Wealth concentration and the changing face of giving
Index Ventures, where Rimer remains influential despite stepping back from day-to-day investing in 2021, has seen outsized returns. The firm has raised roughly $15 billion since its founding, and last year’s exits — including Figma’s IPO and Google’s acquisition of Wiz — reportedly netted Index about $9 billion. Rimer himself has given to public causes: he chairs or has chaired organizations including Endeavor Greece and Human Rights Watch, and in late 2021 his family donated $13 million to McGill University to establish an institute for Indigenous research.
Yet those voluntary acts sit against a broader trend of declining participation in charitable giving. Total U.S. charitable contributions reached a record $592.5 billion in 2024, but the number of Americans who give has fallen for five consecutive years, down 4.5% in 2024, according to the Stanford Social Innovation Review. Household participation has slipped from around two-thirds in 2000 to roughly half today, and even affluent-household giving has declined — from 90% in 2017 to 81% most recently, per Bank of America and the Lilly Family School.
New fortunes, different priorities
The rise of AI companies has created many new fortunes, and their owners are not necessarily following traditional philanthropic pathways. Index’s portfolio includes Anthropic, and reporting suggests that employees who have benefited from equity appreciation often prioritize angel investing or starting companies over building philanthropy into their plans. Anthropic matches employee donations up to 25% of their equity, and while some take that option, others channel gains into new ventures.
That pattern matters because the scale of new wealth is enormous. Forbes identified 45 new AI billionaires in its 2026 rankings worth a combined $2.9 trillion — before either Anthropic or OpenAI have gone public. One estimate cited in reporting suggests that once Anthropic and OpenAI complete IPOs, their employees could hold roughly enough wealth to buy nearly a third of homes in the San Francisco metro area.
Policy responses: taxes, equity stakes and political backlash
As voluntary giving declines, political responses are emerging. California voters will decide on a one-time 5% wealth tax targeting the state’s billionaires. The proposal has already prompted some founders, including Sergey Brin and Larry Page, to move their primary residences to Florida. Governor Gavin Newsom and many economists oppose the measure, warning it could prompt capital flight — a pattern that led several countries to repeal wealth taxes after 1990.
Companies and executives are also weighing other responses. OpenAI has reportedly discussed going public in 2027, a timing that could affect how a one-time tax calculates net worth based on worldwide assets. The company has also been reported to consider offering the federal government a 5% equity stake — a move its CEO, Sam Altman, has described as sharing AI’s upside with the public, while critics argue it could serve as political cover.
Such proposals expose a long-standing tension between private-sector solutions and public interventions. As investor Roelof Botha quipped in conversation with this editor last year, some in tech remain wary of government involvement — “some of the most dangerous words in the world are: ‘I’m from the government, and I’m here to help.’”
Historical parallels and the stakes ahead
The current debate echoes earlier American moments of extreme wealth concentration. The share of wealth held by the top 1% reached 31.7% in the third quarter of last year, a record since the Federal Reserve began tracking the data in 1989 — roughly equal to the combined share of the 90% of households outside the top decile. That concentration is lower than the roughly 45% share at the end of the 19th-century Gilded Age, but when measured at the very top it is striking: economist Gabriel Zucman calculates that four fortunes around 1910 equaled 4% of U.S. GDP, while today 19 households are worth about 14%.
Past responses to high inequality included appeals to voluntary stewardship and, when that failed to slow the political tide, forced redistribution. Andrew Carnegie’s 1889 essay “The Gospel of Wealth” urged wealthy individuals to treat their fortunes as trusts for public good, and later political movements — from Huey Long’s Share Our Wealth to Roosevelt’s steep top marginal rates in the mid-1930s — forced a recalibration of economic power.
Rimer’s choice: voluntary giving or compelled redistribution
Rimer, who has a direct stake in the tech fortunes he discusses, argues for voluntary redistribution: he would prefer that beneficiaries choose to give rather than see wealth taken by policy. His concern about the moral center of tech firms — stoked, he says, by memories of the early Apple founders as cultural heroes — is sharpened by hearing a younger generation view certain tech companies with the same moral skepticism once aimed at defense contractors or tobacco firms.
Whether voluntary philanthropy can scale fast enough to head off political interventions remains the central question. For now, the tension between private giving, corporate and founder responses, and public policy experiments looks set to define how the AI-driven accumulation of wealth is governed in the years ahead.
Source: TechCrunch AI