The smartphone market is consuming the point & shoot customer. The P&S market existed primarily because there were no other options in years prior for casual photography, they simply replicated the same model that existed for film P&S with digital sensors.
The mirrorless market is consuming large parts of the DSLR market. That's because the dslr market used to be made up of a lot of people who didn't want to carry a DSLR in the first place, but had no other option for interchangable lenses.
Now that viable options are avaiable, the markets are going to shift. It's funny that the DSLR makers were the last ones to realize the shift was occuring. The Canon mirorless was horribly late to the market, and they were caught with their pants down. The minor or struggling camera makers like Sony, Ricoh, Fuji and Olympus are capitalizing on it.
The DSLR market will continue to exist, but they've run out of innovation for a while now. The one area they haven't addressed, portability, is why the market is being ripped into new segments.