As a semiconductor pro I find it very admirable that Canon uses an archaic process and is still competitive with the best and brightest of today's processes... just imagine AMD still using Athlon 64 5000+ against Intel's 4th gen i7...
This, of course, is not an excuse.
Canon's main advantage at this point is cost control. Their sensors are probably 3-5 times cheaper to make than Sony's, and, keep in mind that Nikon is outsourcing them from Sony which means they are paying even more $$$.
End result in a slumping economy and a shrinking industry is, that Canon is pretty much the only company that makes money.
I'd be a LOT more worried about Nikon's long term viability than Canon's at this point.
Especially after Sony threw the a7(r) wrench into Nikon's plans to erode Canon's market share.
Now there's no need to change systems (CAN -> NIK). Just buy the alpha body and keep using your EF lenses.
If I were to make a 3-5 year prediction, I'd bet that Nikon's position will be a lot worse than it is now.
While they make great cameras using mostly others' sensors, and their lens line is equivalent to Canon's, they are making no inroads towards the INEVITABILITY of still/moving image merge.
If you think that video has no place in dSLRs because you are a purist, well... there are still people using gramophones, Amigas and fax machines somewhere I'm sure...
Technology moves on, keep up or get off.