a16z's investment philosophy is to assess founders on how world-class they are at their core strengths. Horowitz warns it's a mistake to pass on a uniquely talented founder due to fixable weaknesses (e.g., no go-to-market plan) and an equal mistake to back a less talented founder just because they lack obvious flaws.

While first-time founders often optimize for the highest valuation, experienced entrepreneurs know this is a trap. They deliberately raise at a reasonable price, even if a higher one is available. This preserves strategic flexibility, makes future fundraising less perilous, and keeps options open—which is more valuable than a vanity valuation.

A simple heuristic for VC portfolio construction. For companies with exponential, undeniable traction (the 'absolute winners'), any ownership stake is acceptable to get in the deal. For pre-traction companies that only 'could work,' securing high ownership is critical to justify the risk.

A universal ownership target is flawed. The strategy should adapt to a company's traction. For rare, breakout companies with undeniable product-market fit ('absolutely working'), a VC should take any stake they can get. For promising but unproven ideas ('could work'), they must secure high ownership to compensate for the greater risk.

This provides a simple but powerful framework for venture investing. For companies in markets with demonstrably huge TAMs (e.g., AI coding), valuation is secondary to backing the winner. For markets with a more uncertain or constrained TAM (e.g., vertical SaaS), traditional valuation discipline and entry price matter significantly.

Ben Horowitz advised that pricing is the most critical decision for a company's valuation because it is the primary lever impacting both growth and margins. Founders often treat it glibly, but it deserves deep strategic thought as it underpins the entire business.

Granting a full co-founder 50% equity is a massive, often regrettable, early decision. A better model is to bring on a 'partner' with a smaller, vested equity stake (e.g., 10%). This provides accountability and complementary skills without sacrificing majority ownership and control.

The firm targets markets structured like the famous movie scene: first place wins big, second gets little, and third fails. They believe most tech markets, even B2B SaaS without network effects, concentrate value in the #1 player, making leadership essential for outsized returns.

Seed funds can win deals against multistage giants by highlighting the inherent conflict of interest. A seed-only investor is fully aligned with the founder to maximize the Series A valuation, whereas a multistage investor may want a lower price for their own follow-on investment.