Long term, DSLR is falling.
Long term, mirrorless is raising.
lol, based on your graph more like mirrorless sales are eternally flat, and dslr cycles. Though at the rate mirrorless is "rising" perhaps it can overtake dslr by 2514.
DSLR sales are cycling down and at the rate DSLR sales are dropping, it won't be long before they drop under that of mirrorless.
The mirrorless sales aren't eternally flat but on the scale of the graph presented, a 10% drop from 1,000,000 will of course show up larger than a 10% rise from 100,000.
I certainly hope that mirrorless continues to be developed and that sales rise, the basic idea has so many advantages if they can keep improving. The disadvantages are still big enough to keep them from being high performance products, but those objections are being overcome at a rapid pace. While many see size as the ultimate goal, I see mechanical reliability and simplicity as the big benefits. Getting rid of mirror, sub mirror, AF sensor, exposure sensor. pentaprism, focus screen, and sensor cleaning have to mean a huge cost of ownership reduction, and a huge reduction in cost to manufacture.
The figure we do not see from CIPA is profit. Sales quantities and dollar values are nice, but manufacturers will go where the profit is. Profits from camera sales are dropping for all manufacturers. Canon seems to be doing better than others, but poor sales means less $$ will be spent on new models.
Not surprisingly, good marketing usually has more affect on sales than technical quality, and Canon has supurb marketing. Profit comes from the most efficient manufacturing. That's where Canon really shines. They are very good at designing cameras to be churned out of their factories with lower manufacturing cost. I don't know how they are doing on their goal of completely assembling products by robotics, but it is a stated goal.
Canon traditionally has been about producing a product that was good, maybe not the best, but something they could mass produce and sell for a few dollars less than the competition while making a bigger profit. If they lose sight of this formula, they will be in trouble. I think their lens products are a example of losing sight of their roots. They produce superb lenses, but they cost too much for most ordinary photographers. They need to rethink their strategy of trying to make the best of the best of mass produced lenses, and move to lower production costs.
A huge company like Canon is not nimble, and is slow to react to market changes. They seem to study a market to death, and the market has moved on before they get a new product out. They have the advantage of brand loyalty and manufacturing capability. but are slow. They are pushing the cinema business, and its causing a slowdown in the still photography area. New lenses are designed to make them better for video. This means adding IS for wide focal lengths where its not needed for still photography, and IS makes a design complex, reduces reliability, and increases the price. This is one area where DSLR video is increasing prices.
You can bet that the 7D MK II will have a big price, probably pushing $2K, and that it will cost $300 to produce. If sales are poor, we'll see a price drop, but profits will still be high. Imagine if it were mirrorless! It might drop the cost to produce to $200, and still sell for the same price, or even more. I'm sure this is not lost on the designers, but the Canon marketing people do not believe, and the billion dollars it takes to do it are not going to be doled out in one or two years.