A16Z’s verticalization was driven by a principle from legendary investor Dave Swenson: an investing team shouldn't exceed five people. This small size ensures that investment discussions remain true conversations, preventing them from becoming unwieldy presentations and preserving decision quality as the firm scales.

A16Z's transformation from a small, generalist partnership to a large, specialized firm was a deliberate answer to a fundamental industry problem: the traditional partner model doesn't scale for deploying capital and making decisions in today's massive, professionalized venture market.

The co-CIO model at Maverick Capital works because the partners view their different investment styles not as a source of conflict, but as a necessary counterbalance. This structure protects the firm from the "excesses" of any single investment philosophy, creating a more robust decision-making process.

Venture capital has become a scaled, specialized business with large teams. The future, however, belongs to compact firms of well-rounded individuals who can source, exercise judgment, sell, and help companies. Over-specialization where one person sources and another helps is an inefficient model.

Sequoia operates on a consensus model where every partner must agree for an investment to proceed. A single "no" vote can kill a deal. This high-stakes process forces deep conviction, though partners can be convinced to override their own negative intuition if the rest of the team is overwhelmingly positive.

According to Volition's Larry Cheng, enduring partnerships thrive on a culture that values disagreement and conviction over homogeneity. By making "embrace opposites" a core value, a firm can see differing opinions as a source of strength and "magic," rather than a headwind that could fracture the partnership.

Horowitz's steelman argument for small VC firms is that most firm structures are incompatible with scale. Partnerships with shared control can't make the hard decisions needed to reorganize. Furthermore, a single investment committee with 20 people destroys the candid, truth-seeking conversation essential for good investing.

Large, contrarian investments feel like career risk to partners in a traditional VC firm, leading to bureaucracy and diluted conviction. Founder-led firms with small, centralized decision-making teams can operate with more decisiveness, enabling them to make the bold, potentially firm-defining bets that consensus-driven partnerships would avoid.

Traditional VC firms, structured as small partnerships with shared control, struggle to reorganize and scale. A centralized decision-making structure, however, enables a firm to adapt to a broadening tech landscape, moving beyond a few key investments per year to cover many more opportunities.