You're comparing the wrong things. The correct comparison would be with Polymer, which Google is pouring far more resources into than Angular.
I'd be humble about Polymer too
I don't see Polymer going anywhere either. The hype about web components have been drowned by React, which is here, now, and also solves several other issues that web components don't solve (especially along with something fluxy).
Citation needed.
Google is trying to make web better by bringing things like Service Workers not by releasing Libraries.