I'm not sure what you mean by this. It's hard to take Google's push for these sorts of APIs as a push for a "democratic shared platform," let alone see how all this would harm Google in any way.
"Democratic" may not have been the best term to use (edited the original comment), even though, as far as platforms go, the web probably is one of the more democratic ones. I was more aiming for "non-proprietary", "cross-platform" and "shared". Mobile apps are closed ecosystems.
> how all this would harm Google in any way
Owning half the mobile app ecosystem is more valuable than sharing a web.
