The Scale Paradox: Why 500M Users Make Duolingo Unbeatable
Duolingo's 12x advantage over Babbel isn't about features - it's about data network effects. Here's what 15 years of scaling learning platforms taught me about competitive moats.
Why 80% of SaaS Features Are Copied in 6 Months (And How to Build Un-copiable Advantages)
Discover why feature copying is killing SaaS differentiation and learn how customer discovery creates sustainable competitive moats that competitors can't replicate.