What companies are exiting within 2-3 years of raising a Series A, B, or even C? Strongly disagree that companies are going public sooner, if you compare when eg msft / goog went public vs airbnb / uber the market cap is radically larger and the companies are much older.
Before 2018-2019 the common wisdom was to stay private as long as possible because Softbank and other late stage firms were willing to throw a lot of money around in private rounds. Now VCs are trying to throw their companies over the fence as soon as possible.