AVG Purchases Sana technology,end of Threatfire free?

http://www.eweek.com/c/a/Security/AVG-Purchases-Behavioral-Detection-Technology-to-Bolster-AntiVirus-Defenses/?kc=rss

This should provide the AVG antivirus with quite a boost,however since Sana licensed their technology in Norton Antibot it seems likely now that Symantec will switch to using their own Threatfire technology.Perhaps this spells the end for the only freeware behavioural blocker? :-\