it may quickly turn into a losing strategy when next gen Nikons hammer Canon DSLRs also in video capabilities.
Good luck getting that to happen...gonna be awful tough for Nikon to make those cameras without the Sony sensor. And I can't see Sony being pumped about Nikon releasing an affordable killer video DLSR that cuts into the profits on their video cameras.
Have you seen the "uncompressed" video out from the D800? It looked pretty bad when people tried to post-process it.
Anyway, back on topic, I see a 7dII coming out next spring, and the sensor will reflect whatever the 70D gets (18mp, 22mp, etc). The AF will be an APS-C version of the 61pt AF (so probably 40ish), and the FPS will reflect what Dual Digic V can do (8-10fps). So, its a mix of incremental changes (passing down elements Canon already has), but I think many 7D users would be happy with the upgrades as a whole. Probably priced a little higher than the 7D is now, but still <$2k.
I think Canon remembers that their enthusiast market isn't as deep-pocketed as their pro's. And they also have less investment in their system, so making them mad loses them a customer base