What Is ZIRP And How Did It Poison Startups?

TL;DR

ZIRP (zero interest rate phenomenon) was a period when the Federal Reserve set interest rates at zero, causing banks and investors to flood money into alternative assets including venture capital. This created an unsustainable bubble: startups received excessive capital, valuations skyrocketed (e.g., 350× revenue multiples), and many founders wasted money instead of innovating.

Key insights

• ZIRP forced money to seek yield, leading banks, family offices, and new investors to pour capital into VC without understanding startup risk.
• Many new VC investors treated startups like public stocks, applying valuation rubrics from large revenue companies to million-dollar-revenue startups, ignoring the massive failure rate of scaling.
• During ZIRP, “money had product market fit” — lending companies and others with capital‑intensive models thrived because cheap capital made their businesses look successful.