It'll be incredibly frustrating to have to think about which USB-C device is compatible with which. You want to make a proprietary charger? Use a custom connector and stop confusing end users.
HP at least was already doing it on their laptops. Though at least some models later disabled the lock with BIOS updates.
My HP Spectre won't charge from non-HP usb-c chargers in Windows; or, at least, it complains and says it won't charge. I haven't tested whether it actually draws current or not since I only booted it once in Windows. However, in Linux it charges fine at full-speed from non-HP charger with appropriate wattage. It will not charge at all from several chargers that don't have the necessary 90W capability.