While i do not understand much the difference in protocol, i can quite sure making a DC-DC working with such a wide range input voltage(from 5 to 48v) is not a small feat. And if they limit the input voltage to smaller range(like 28V to 48V only), then we back to “compatible charger” problem again.

They really need to increase the current capacity of usb C. High performance laptop can consume over 10A already. Delivery all that power through such a tiny port like usb C is not a such a good idea tbh. It’s insane to me that they already push 48V through that port already.

Are there any regulations about how hard you have to “lock down” your product ?. Or do they just “fuck around and find out” ?

Put some tier 1 VM on it: ESXI, promox, etc. Now you can do a lot of stuff