I'm pretty sure Google has invested millions more into Angular & the ecosystem than Facebook has into React - they even have a CSM on the Angular team. Even internally the investment seems to be proving vast, as Google even has a production Angular 2 app already (during the painful alpha) & multiple teams publicly pledging to use it, which will probably grow as it becomes appropriate for Google to migrate products to Angular 2. Google has a rarified number of software products compared to Facebook - it's irrational to assume all of them will jump to their framework immediately, especially considering it was in heavy R&D the past two years & only now entering beta.