If the DRM is coming from Google, I'm sure they'll take that into consideration when designing it. Feels ripe for an anti-trust lawsuit, but IANAL so who knows.
When I wrote the comment I was imagining Google using the tech as a moat to stop other search engines from indexing DRM protected content. I guess if they shared it and "all" search engines could index the content, it would probably be fine? I'm guessing that's why Widevine is "fine".
But like I said, I'm not a lawyer and have no idea what I'm talking about.