You are wrong about focusing on the high end FPGA. There are plenty of FPGA's for low-level stuff. For example, one project I was involved in used FPGA for debo

You are wrong about focusing on the high end FPGA. There are plenty of FPGA's for low-level stuff. For example, one project I was involved in used FPGA for debouncing completed with the programming interface for ADSP-21xx. They replaced a dozen of different chips with one FPGA.