Does Friendfeed blog comment integration spell the end of niche competitors?

Just a question

ReadWriteWeb has integrated Friendfeed comments into its blog platform. The process came about via a simple Movable Type plug-in (and the site notes a similar plug-in also exists for WordPress). It’s free services, integrated into free media, using free plug-ins. Meanwhile, Disqus, Intense Debate, SezWho, CoComment, etc. are trying to build businesses around the same type of functionality. Most if not all are venture funded.

While FriendFeed has yet to unveil a business plan itself (and it’s venture-backed too), does the free on free on free the service and its extensions provide spell the end for the “business” of comment aggregation?