I'm not sure why this keeps coming up. Why wouldn't ESP32 be used in commercial products?? >Also, what would be considered the go-to chip for commercial applic

I'm not sure why this keeps coming up. Why wouldn't ESP32 be used in commercial products?? >Also, what would be considered the go-to chip for commercial applications? ESP32, if it fits the product needs. There are as many types of microcontrollers as there are needs for specific functionality. ESP32 fits practically any application that needs a microcontroller and wifi or bluetooth. That's the description of quite a lot of IoT products.