Marjorie Janiewicz has sold enterprise software through every platform shift for three decades: Oracle, MySQL, SAP, MongoDB, HackerOne. Now as Chief Revenue Officer at Mistral AI, she's taking a French startup from zero to $400 million in 18 months, closing deals with ASML and HSBC in under a year - timelines that used to take half a decade. Recorded in New York as Mistral announced its Finance offering, this conversation addresses what's working versus what's theatre in enterprise AI. Marjorie supports the MIT hypothesis: 95% of AI projects never reach production. Chatbots drive adoption but don't change businesses. The 5% that work? They start with one high-impact use case, they customise models with proprietary data, and they deploy on-prem where regulated data lives. She explains why the adoption curve flipped, why SaaS companies sitting on data can win if they treat AI as transformation not automation, and why Mistral bet on 400 forward deployment engineers instead of just shipping models. From prototypes done in 48 hours to why "sovereignty is just marketing, independence is what matters," this is pattern recognition from someone who's been in the room when the shift happens repeatedly. Whether you're a SaaS company worried about agents or trying to sell AI to enterprises struggling with ROI, Marjorie's earned her perspective.