If someone comes up with a better method for charging, they can get all the big device manufacturers in the room, convince most of them that the new method is better, and then the commission will likely adopt a new standard.
This is not far-fetched. All the players relevant to internet, for example, collaborate to determine how web standards should evolve. It works pretty well. It's more or less the same companies who need to collaborate to build something better than USB-C.