[xsl] XSLT vs Web Components

Hello all,
One of the primary uses of XSLT is transforming xml to html, it seems like.  I don't have data handy, but based on what I've read on this list over the past dozen years or so, seems like a reasonable enough conclusion.
I've recently been reading about X-Tags, Polyfil, Web Components, etc., and tinkering with it. (for instance, x-tags.org, webcomponents.org, and https://developer.mozilla.org/en-US/Apps/Tools_and_frameworks/x-tags).
It seems like pretty cool stuff and it occurs to me that by using it one could pretty much eliminate the use of xslt for such transformation, if I understand it correctly.  From my own perspective, it occurred to me that an xul and xslt based xml editor (from the now-hibernated Etna) and content management system interface I was working on for my employer until about a year ago, could instead be refactored using web components.
1) Do you think the web components concept will catch on widely?  2) will they be supported by browser developers natively eventually, do you suppose? and finally, 3) do you think it will as a result have a major effect on the use of xslt, resulting in it's decline?
Thank you in advance as always for your considered and often witty observations.

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Regards, Matthew L. Avizinis Gleim Publications, Inc

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