1. We want a charger to also be a data cable.
2. we want a charger to understand the load that the device is asking for, and charge devices both safely and quickly.

This means that if a phone is wanting 120W to fast charge it's circa 2040 sulfer-hydride battery and you plug it in to a circa 2010 USB brick, you don't burn your house down.
Conversely, when you plug in your Galaxy Note 10 into your 2040 terawatt brick, your phone won't explode when it gets a 40V DC potential.

Yet - the actual interface, the 'connectors' should remain the same, so you don't have to go to computerzone and find out if your special cable is in stock.