XML is too flexible for its own good. It's not hard to come up with a simple XML schema for basic data that's functionally equivalent to json, but there are pr

XML is too flexible for its own good. It's not hard to come up with a simple XML schema for basic data that's functionally equivalent to json, but there are probably a dozen different ways that you could structure the schema to achieve the same result. And of course with XML being XML, most people trying to make that "basic type" schema would probably end up throwing in extra metadata, events, or things of that nature.