A decade ago, 88% of a tech company's value was created post-IPO. For recent IPOs, 55% of the market cap creation happened while the company was still private, fundamentally changing where investors capture growth.

Venture-backed private companies represent a massive, $5 trillion market cap, exceeding half the value of the 'Magnificent Seven' public tech stocks. This scale signifies that private markets are now a mature, institutional asset class, not a small corner of finance.

Bill Gurley questions if America truly benefits from trillion-dollar tech monopolies. He suggests these massive market caps could indicate a lack of "pure competition," where excessive profits are captured by a few giants instead of benefiting consumers through lower prices.

The greatest systemic threat from the booming private credit market isn't excessive leverage but its heavy concentration in technology companies. A significant drop in tech enterprise value multiples could trigger a widespread event, as tech constitutes roughly half of private credit portfolios.

Tech's portion of US GDP has tripled from 4% to 12% since 2005 and is projected to continue growing. This underlying economic shift, accelerated by AI converting services to software, indicates that tech's total market cap has significant room for expansion, supporting more trillion-dollar companies.

The current market is unique in that a handful of private AI companies like OpenAI have an outsized, direct impact on the valuations of many public companies. This makes it essential for public market investors to deeply understand private market developments to make informed decisions.

Companies like SpaceX and OpenAI command massive private valuations partly because access to their shares is scarce. An IPO removes this barrier, making the stock universally available. This loss of scarcity value can lead to a valuation decline, a pattern seen in other assets like crypto when they became easily accessible via ETFs.

A strong power law effect is at play across markets. In the private sphere, the top 10 unicorns now account for almost 40% of all unicorn value, doubling their share since 2020. This concentration mirrors the public markets, highlighting an increasing 'winner-take-all' dynamic.

The trend of companies staying private longer and raising huge late-stage rounds isn't just about VC exuberance. It's a direct consequence of a series of regulations (like Sarbanes-Oxley) that made going public extremely costly and onerous. As a result, the private capital markets evolved to fill the gap, fundamentally changing venture capital.