I did not read the article, but in 10 years, I would hope that technology has advanced enough to eliminate the need for the reflex mirror, so that we have mirrorless cameras (which are not DSLR's).
I'm pretty sure Canon agrees with this assessment, that's why they're putting r&d into on-sensor af performance and tend to recycle their phase af modules no matter what Nikon does.
It depends on whether Canon and Nikon realize that they're not competing only with each other any more. They have been passing the ball between each other and set the tune for everyone to dance to, but little by little other manufacturers have gone the right way: instead of competing with them, they made their own game.
They arrived late at the mirrorless party. Nikon went with the 1" system that sold well at the beginning, but eventually lost the long term competition. The EOS-M has never really taken off.
Now they have to play catching up again. I don't know if DSLR will be dead in 10 years, but it is possible that they will become a niche market dependent on specialized lenses. It seems reasonable to me, looking at reviews of the a7 pair, that in a few years from now the reasons to buy a DSLR might be very few.