Something I find interesting about early technology IPOs is how early they IPO-ed compared to more recent tech companies and how much of their growth and value creation happened post-IPO.<p>- Microsoft IPOed in 11years, profitable and at a ~$800M valuation. They hit a ~$1T valuation in 2000. During the 90s, their stock roughly doubled each year, for a 1000x growth.<p>- Amazon IPOed in ~3 years, unprofitable and at ~$300M valuation. Their stock has 2200x since then.<p>- Google IPOed in ~6 years, proftiable and at a $25B valuation. Their stock has ~80x since then.<p>- Facebook IPOed in ~8 years, profitable and at $100B valuation. Their stock has 20x since then.<p>I think the ZIRP era led many companies to avoid going public, either because of access to easy money or because their financial didn't need to be disciplined enough. The high levels of pre-IPO funding also has led to many/most of them underperforming in the public markets.