Can is a great idea... But in practice the hardware to connect to the bus is ~10 cents, whereas the cheapest microcontrollers are ~1 cent. That means if you

Can is a great idea... But in practice the hardware to connect to the bus is ~10 cents, whereas the cheapest microcontrollers are ~1 cent. That means if you want thousands of connections for every peripheral, the costs of CAN transceivers really start to add up.