A vendor who doesn't like it could just make it very inconvenient to use the on/off switch, for example by making it take a very long time until the device beco

A vendor who doesn't like it could just make it very inconvenient to use the on/off switch, for example by making it take a very long time until the device becomes available after it has been turned off using a switch. Thus users would be strongly discouraged to use the switch.