The Evolving Landscape of Venture Capital Mindsets

Author: Martin Casado (a16z), X article, October 28, 2026 URL: https://x.com/martin_casado/status/2115474230511030475 One-line: Venture has professionalized into a mix of incompatible investing philosophies (financial, productive, frontier, speculative), and deal debates go wrong when investors grab arguments from all four instead of reasoning from one consistent view.

Casado introduced it as notes written for his team “after a decade of investing.” See After a decade of investing… (tweet).

Key claims

• Venture has professionalized. Early-stage companies today are the size of public companies a few decades ago, so firms now run coordinated, sector-specific analysis, and “I’d wager most of that analysis isn’t about technology at all.” Finance-style evaluation makes sense at that scale. But it clashes with early-stage tech investing, because technology waves come before business models and create their own TAM.
• The four archetypes:
  • Financial. The financials and the shape of the market are the asset’s health. The work is churn, margin, growth, pricing power, NDR and TAM. It fits from B rounds through growth, and in areas where tech isn’t the differentiator (“most vertical SaaS is not a hard technical problem”). These investors are price-sensitive.
  • Productive. Tech is a market-creating productive asset. They focus on tech, team and market fit, and treat metrics and existing TAM as second- or third-order. The goal is exposure to the leading tech companies more than a good deal.
  • Frontier. The closest to the romantic, historical view of VC. Founders and technologists are the asset (“founders are smarter than markets or investors”), so it “ends up looking a bit like a talent agency.” Diligence the team and accept market risk.
  • Speculative. Crypto tokens and parts of the secondary market. Little visibility into the underlying asset, so they invest in the market’s perception of it. Heavy on price, macro and timing, and generalist across sectors and stages.
• The categories are idealized. Casado knows of almost nobody who follows one strictly. They are still useful for understanding how someone is reasoning about a deal, since “it’s hard to directly refute a finance argument with a product argument.”
• The grab-bag trap. The best deals look good under every lens. In a harder deal, investors pick arguments from different philosophies to justify a decision they want to make: worrying about TAM on a revolutionary technology, or backing a company they don’t believe in because it’s a “good deal.” Objections should be consistent with the bet being made.
• Philosophy by stage. One common pattern is frontier before product, productive before traction, and financial after the business is repeatable. He cautions that seed through early C is ambiguous, and many companies took years to break out.
• Casado’s own view: strictly productive. For early-stage infrastructure, financial and speculative views take “a zero sum mindset,” and underrating TAM expansion is “almost a cliche”: Uber vs. taxis, GitHub vs. the repository, Cursor vs. the IDE.

Notable quotes

“Tech waves nearly always precede figuring out the business models. Hell, we didn’t know how to monetize the Internet for years. And tech creates market and TAM so evaluating market shape is pointless.”

“So frontier investing ends up looking a bit like a talent agency. Just find the best founders exploring wildly new spaces and back them.”

“The rationale is you can’t predict the future, but you can diligence a team.”

“And I find it almost paradoxical to look for disruptive tech, and then evaluate it via mature space indicators like traditional business metrics.”

“So figure out where your core beliefs are, and visit them often in your own reasoning.”

Full text

How it connects

• Investment Philosophy · Venture Capital — a taxonomy of how VCs justify deals.
• Arthur Rock — the epigraph: “And what I’m interested in is investing in people.”
• TAM Expansion · Total Addressable Market — the productive investor’s case against TAM analysis for new technology.
• Secondaries · Crypto — where the speculative mindset lives.
• Founder Evaluation — the frontier investor’s main diligence.
• Cursor — one of his TAM-expansion examples.