For more than a decade, Silicon Valley’s most powerful companies have stayed private for longer than ever before, buoyed by deep pools of capital and sovereign wealth funding. But, as interest rates remain higher, AI infrastructure costs balloon and some of the world’s largest private firms mature into businesses of national, and increasingly geopolitical, importance, the public markets are creeping back into view. This is not an IPO boom, with executives continuing to insist they are in no rush, and in many cases, they are probably…