Wait. This is not true. You are free to set up a mirror at ftp://ftp.gnu.org/pub/debian where non-free and contrib are left aside.
The way things are set up at present, this wouldn't be enough to do the job right. We would also have to change some of the contents of the distribution, in effect make our own modified version of Debian. I sent a message last week explaining several reasons why I don't like the idea of doing that. I hope Debian will set up a way that we can recommend and distribute the Official Debian system, entirely unchanged, without recommending the non-free packages. And preferably do it by recommending an official Debian site to get it from. People have already proposed an easy way to make an alternate web site, and we've already discussed the changes in apt, so I think this is not a hard thing to do. It's just a matter of whether Debian wants to do it.