If only we had used Lisps for all the things!
We could have had Lisp instead of JS, but no, that would have worked too well; management wants Java. We almost had a Scheme instead of CSS: DSSSL, which could also do structural transformations of the document tree. But once again, no. The simplicity multiplied by the flexibility of a Lisp, equaled unacceptable complexity, for some strange definition of complexity.
XML looks like it really, really wanted to be a Lisp, what with its orderly nesting of tags. I almost wonder if XML stumbled and fell, due to the supporting pillars of parens being knocked out or corrupted, left, right and center.