Philanthropic foundations often reflect the missions championed by their original donors. However, as time passes, these missions can become less relevant or outdated once the donors have passed away.
Historically, influential figures such as Bill Gates and Jensen Huang, similar to Gilded Age entrepreneurs like John D. Rockefeller and Andrew Carnegie, have contributed significantly to the U.S. economy. They later established sizeable foundations meant to endure indefinitely.
An interesting case is Bill Gates, who in 2025, made a unique decision about his foundation. He planned to deplete its resources by 2045, departing from the usual practice of perpetual existence.