Working with publishers on white-label streaming means it would take one switch to offer that game on Stadia too, and at that point publishers are just getting another revenue stream without much added work (and, in theory, very few if any fees). Win-win.
1. They've actually mentioned this a few times. Keeping Stadia going, but just offering a B2B side for publishers to create their own services. Most recent was the dev event. https://twitter.com/...