Problem is that the current administration is ALSO going after 501c3s. They just changed the rules for reporting via 990 tax forms (that non-profits in the US use to report their activities) to make them far more detailed and require more details about where and how money is being spent. On the surface, most people read that and think "good, more information is better" but what ends up happening is that foundations and other large donors may shift the way they give due to the new ruling, which will leave huge swaths of non-profits without funding.

Arguably, these vehicles do exist... in the form of 501(c)(3) university endowments. They endow professorships and graduate fellowships, pay for facility buildouts and infrastructure, and provide a strong pipeline of financial aid to allow talented undergraduates to pursue research rather than needing to repay debt immediately after graduation. And unused funds are invested in public and private markets, ensuring minimal waste and sustainable capital growth. And non-profit universities have strong and time-tested governance rules on many if not all of the dimensions specified.

But these very endowments have been special cased as additionally taxable, despite that status, under the 2025 OBBBA, resulting in research budget cuts [0].

Would independent endowments as you describe them be more immune?

[0] https://www.pbs.org/newshour/education/college-endowment-tax...

> would people here actually support or help design a 501(c)(3)-style vehicle for public-benefit science and technology funding?

Why a hypothetical? Plenty of options available to donate to or to contribute otherwise. Not help built it, help grow and maintain it.