a tag based meta-language [...] allows the creation of self describing data.So "XML" per se doesn't mean ready-made standardized "containers" (they're in the DTD/Schema), but more of a *container-construction kit*.
If y[ou l]ook at it that way, are you still so sure it will "revolutionize" IT like containerization did shipping? Do you believe shipping would have been commoditized if there had only been a standard for *how* to build containers, but no actual standard for the resulting containers themselves?
(Needless to say, since you already inferred it from my tone above, I don't think so.)
[EDIT: Typo; "you look" inadvertently contracted to "yook".]