This will benefit Google in some ways for sure. In the corporate and enterprise environment, where updates - even critical security patches - must be thoroughly tested before deployment, this will put a burden on the IT staff to expedite this process. I'm betting some will tire of this and move to Google cloud services where they have to think far less about this kind of stuff.
This is great. I am glad Google is doing this. In fact everyone should do this. I know many companies discover security issues and do not disclose them or give the project too much time to fix them.