Sure, no doubt, any time you can clear positive funds by moving from old to new, it is a good thing.
After the interesting release of the 6DII, it will be very telling about the 7DIV, 5DV and 1D whatever that should be announced over the next year or so, I suspect. It is just hard to see where Canon could wow us, vs just providing evolutionary products. Sony keeps trying new things though, but I am not a Sony fan. I have seen them try many things in the past, then abandon them, or just have products simply just fail with poor customer service. I have written them off as a consumer, but not as a shareholder.
When Canon's F-1 first challenged Nikon for the slot of the "professional's professional camera," (particularly the photojournalist's camera), most were wielding Nikon F2 and weren't sure Canon was really serious.
Through the 70s and 80s, some other manufacturers dabbled with their own versions of cameras designed to compete with the Nikon F2--the cute lil Olympus OM-1, the Minolta XK-E, the Pentax LX, and the Topcon Super D--that I recall offhand (having lusted for all of them at one time or another, owning the Topcon). Only Canon also took the step of providing professional service as well. I remember in 1978 strolling in to a Canon regional office with my new F-1 with an MF motor drive with an idea for a modification to the drive. The technician merely grinned and hustled into a back room, returning a short while later with my modification made...no charge.
It took, however, until the late 80s before the professional market as a whole really believed Canon was in it to win it, and that was after they had dropped the FD mount (curses!...at the time) and swept away Minolta's 3-year autofocus lead with the far-sighted all-electric EF mount.
And when I finally resolved to let go of my FD equipment, I looked over at Nikon...and was confused by their hodgepodge efforts at trying to gradually transition the F-mount from mechanically manual to electrically automatic. So I grudgingly admitted that Canon's "big bang" transition to the EF mount was smart after all.
And that is something Canon can arguably do again. Arguably, Canon can sit back and tinker in the background with their own version of a professional mirrorless system that will knock everyone off the fence again.
I dunno if that's what they're doing or not. It seems more to me that they're diddling around protecting their video cameras, or as a company much larger than just DSLRs, they're happy with other Canon divisions.