>>elforc+Rc
Google will degrade their services for non-DRM browsers. They have a long history of "oops" with UA sniffs and serving slow buggy alternatives to Chrome-only JS.
You'll be filling in captchas 10 times a day, getting randomly locked out of your Google account in the name of security, and whatever new feature they add to their services, they'll find an excuse to require the DRM for it.