> If it becomes widespread, the choices are to support DRM or be locked out of the web.

Or use a free and open source browser that doesn't implement it. If this is something people want to take a principled stance against, those browsers will doubtlessly continue to exist.

Unless you're referring the content access. That's a general trend with technology that likely won't be stopped. If you choose not to use certain technologies, it's unsurprising that you won't be granted access to certain things.

Not being able to play protected content (which you couldn't in the first place without installing Flash or another proprietary plugin) is a far cry from being locked out of the web.