As AI companies prepare to go public, a new generation of eccentric billionaires will emerge with unprecedented wealth. This AI wealth could inject as much as $100 billion annually into American charitable giving, creating a "third wave" of philanthropy following Carnegie/Rockefeller and Gates/Buffett eras. The scale of potential donations represents a significant market shift in philanthropic capital.

Unlike their Gilded Age predecessors, today's tech philanthropists have largely neglected physical legacy projects, creating no equivalent to the Metropolitan Museum or Carnegie Hall. This reflects Silicon Valley's "terror of being seen to have money" and performative disregard for aesthetic concerns. Modern donations focus on measurable outcomes rather than creating enduring public beauty, missing opportunities for cultural impact.

The author calls on AI philanthropists to build monuments, universities, and public spaces that endure beyond lifetimes. While Stripe's Patrick Collison exemplifies this approach by funding new aesthetic schools, most tech founders remain absent from this cultural landscape. The physical legacy debate underscores how AI wealth might reshape philanthropy beyond financial contributions to tangible cultural infrastructure.