Pfizer
“Pfizer spent 175 years building the most formidable regulatory moat in capitalism — FDA approvals that take decades and billions to replicate, manufacturing facilities that require Ph.D.s just to tour, and patent portfolios so deep they literally print money for two decades per molecule. The exquisite irony is that AI's first serious disruption target in healthcare isn't the corner pharmacy or the insurance middleman — it's the R&D process that creates those billion-dollar moats in the first place.”