They already do that some. Many of the EU firmware builds are kinder on letting you access/charge without excessive need for a driver. Not all, but some. Also, the US products is already reinventing the wheel in the first place specifically to block 3rd party products. Many connectors/chargers use the same standard, only with a different plug. *All* of the USB standard plugs that won't charge off a random USB plug with working +5V/GND are intentionally not doing so - you have to intentionally break it's capability to do so by verifying the charger.