I would go all-in. Web Components is not (just) about technology, but about 4 companies working together on setting a standard. Companies that used to fight in the Browser Wars now work together on the standard. They are the WHATWG that took the role of the W3C HTML/Web workinggroup. 4 companies ... Apple, Google, Mozilla and Microsoft

And the WHATWG (for now) is "by invitation only"... note the big name missing.