I would put WEI together with a together with a number of other recent changes that I think signal that the land grab error of the web is over, and that web based businesses need to get real about their economics.

1) Netflix restricting password sharing 2) RedHat pushing the limits of the GPL to restrict RHEL re-distribution

In some ways, I think this could be a good thing, in that it clearly separates the advertising funded web (the commerical web) from the altruistically funded web (the free web). Maybe with a little luck, the free web becomes something more akin to the web circa 2000 even it has alot less information. That might be better than the open sewer of a web that we have today.