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When Marketo broke its unsubscribe link, a team built a fix in an afternoon. PainSignal data shows 128 similar app ideas where users bypassed legacy platforms. The real threat to legacy B2B isn't just AI startups — it's customers becoming micro-vendors.
Jason Lemkin's latest SaaStr column is full of real-world AI fails—lazy agents, stealth churn, and 60% solutions. But these aren't just anecdotes: PainSignal data reveals 47 problems on agent reliability and 103 integration headaches. For builders, each one is a product opportunity.