I keep hitting the buy button on Applied Materials (NASDAQ:AMAT | AMAT Price Prediction) because one truth about the AI build-out has become impossible to ignore: NVIDIA (NASDAQ:NVDA), Advanced Micro Devices (NASDAQ:AMD), and custom ASIC designers cannot ship a single next-gen AI chip without advanced wafer fab packaging, and Applied sells the etch, deposition, and CMP tools that make Through-Silicon Vias and Chip-on-Wafer-on-Substrate stacking possible in the first place.