You are correct.

I LOATHE XML Schema. I have used it for years, and have never memorized it. I still need to look it up like a n00b, every time I use it.

But the simple fact of the matter is, is that so many people and projects have inculcated it into hundreds (if not thousands) of toolsets and specs (Like -Ick- WSDL), that it really is the only viable game.

People tend to like JSON precisely because it eschews the kind of overhead that is the definition of XML Schema.

Huh. I just realized that JSON Schema is STILL not a published spec. It is currently in draft, and has been, for a long time.