Why Product Led Growth Fails When Users Stop Sharing

Most SaaS founders obsess over activation rates and time-to-value, but they ignore the second half of the viral equation: retention through sharing. In this episode, we look at how Notion’s early growth relied on users inviting collaborators, not just signing up. We break down why collaboration features create a network effect that product-led growth companies often underestimate. Lucas and Luna discuss the hidden mechanics of invite-driven virality, the difference between single-user engagement and multi-user expansion, and how to design for peer pressure without annoying your community. If you are building self-serve software in October twenty twenty-six, this is the missing piece of your funnel.

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