Key Takeaways

  • Harry Stebbings wants to back consumer momentum, arguing Instinct at a rumored $30 billion valuation could become the super app of the West with liquidation preference protection.
  • Jason Lemkin rejects chasing short-lived consumer spikes, warning that capital for hype-driven apps feels infinite right until retention collapses.
  • Lemkin prefers putting 20% of a venture fund into OpenAI at a $1.25 trillion valuation, viewing temporary market panic as a dislocation on the path to a $10 trillion outcome.
  • Enterprise AI penetration remains tiny; Anthropic represents roughly 0.1% of Fortune 500 IT spend today, but Lemkin projects that figure will climb to 2% or 3%.
  • Growth stage investors need strict discipline against negative gross margins, codified in Jason Lemkin's 100-Day Rule for Growth Rounds.

The 100-Day Rule for Growth Rounds

During a simulated investment committee debate, Lemkin pushed back on Stebbings' eagerness to write checks into viral products without historical retention. “How much money is there for Instincts of the world? It feels infinite now,” Lemkin said. “I feel like for our growth rounds, we need 100 days of traction. I feel like we need this rule. I'm willing to do the multiples. I'm willing to roll the dice, but I want 100 days of traction for a growth round.”

Here are the three components of the rule:

  • Traction Longevity Requirement: Mandate at least 100 days of verifiable, compounding performance data before committing capital to a growth-stage round, rather than relying on two to four weeks of viral traction.
  • Price Multiples Flexibility: Willingness to tolerate aggressive valuation multiples and high initial pricing, provided the company meets the baseline requirement of 100 days of measurable customer and usage momentum.
  • Consumer Unit Economics Filter: Explicit refusal to deploy growth capital into fungible products exhibiting negative gross margin growth or unclear business models without proven, durable retention.

When This Works (and When It Doesn't)

This rule works when applied in growth-stage venture committees to prevent capital destruction on short-lived hype cycles and unproven consumer AI products, ensuring that massive capital deployments are backed by bankable, durable customer engagement. When software costs real compute dollars to serve, a sudden surge in unpaid users burns cash fast. If those users leave on day thirty, the equity round is destroyed.

Where this breaks down is in winner-take-all consumer network effects where lock-in happens within ninety days. If an app establishes a genuine social graph or closed distribution loop in six weeks, waiting one hundred days means you miss the round or pay five times the price. Stebbings argued that Instinct carries massive consumer optionality: “There's a small chance that it is the super app.” If you wait 100 days, the tier-one multistage funds have already closed the round and taken the board seats.

Yet for enterprise and software tooling, the rule protects you from false positives. Enterprise budgets move slowly, but they stick. As Lemkin observed about Anthropic: “Look at Anthropic. It's only 0.1% of Fortune 500 budgets today. Clearly, it's going to be in the 2 to 3% range.” B2B enterprise software with expanding seat penetration can justify paying top-of-market multiples. Pure consumer hype without retention cannot.

What to Do With This

If you are evaluating a fast-growing growth bet or setting milestones for your next financing round, run this audit tomorrow morning:

1. Plot your active user curve by weekly cohort across the last fourteen weeks. If week twelve retention is below 20% on your earliest cohorts, stop marketing and do not raise a growth round on those numbers. You will price yourself into an impossible liquidation preference stack.

2. Separate top-line gross margin from compute subsidy. If your gross margin is negative once server and model inference costs are fully loaded, price your product immediately. Never use venture growth capital to subsidize compute without a direct path to gross margin positive unit economics.

3. When prospective investors demand proof of durability, show them day 1 through day 100 net revenue retention. That single chart neutralizes valuation pushback because it proves your usage compounds instead of churns.