The summarization tech isn't owned by Summly. It's owned by SRI International and was licensed to Summly. Maybe a large chunk of the reported $30 million was actually used to acquire that technology from SRI?
[1]: http://www.forbes.com/sites/parmyolson/2011/12/13/teenage-pr... [2]: http://techcrunch.com/2011/07/15/trimit-summarizes-emails-bl... [3]: http://gigaom.com/2011/12/13/meet-the-internets-newest-boy-g...
Annnd that's about the only way this makes sense to em.