The slides are full of selective sampling... Lies, Damn Lies, and Statistics.
Context is everything. Major things to cover he readily omits from the slides. e.g. The dips in previous generations, the global recession that took hold in 2008, the elongated console life cycle this generation and how that fits into past patterns (which have dips btw), the choice to look at Sony's console profits from 2000 and not since 1994, the lack of "big picture" analysis e.g. the massive increase in the industry that his own slides show over the last 10 years, the role of Sony using its highly successful console line to accelerate mainstream adoption of Blu Ray, Microsoft general trend toward profitability (especially once the RRoD issue is considered they have a fairly strong upward trend in profits for the "division" which is not only an Xbox sinkhole), and so on and so forth.
That is not to deny that games are getting more expensive to make, the industry has become more hit-oriented, mobile and non-traditional platforms being used for gaming, the success of the Wii and a Nintendo-centric software model and the remainder of the console market heavily divide between Sony/MS creates a dilemma for publishers to maximize reach and minimize risk, and so forth. Further, what he doesn't analyze is how profitable and sustainable the new emerging formats are.
It is hard to argue "consoles are dieing" when this generation has sold more console than any previous generation and when titles like CoD are selling 10M+ every year.
A better presentation would have focused more on "social" and mobility as both competition for, and complimentary to, current models. It is a big deal when your phone is your Facebook, Twitter, and texting hub and you can game on it. That means you are taking a connected gaming device everywhere with you. Going from a $20/mo land line to a $50-$100 mobile plan obviously eats into discretionary spending. These things compete for people's money and mobile phones are quickly becoming a "necessity" for many. This is a challenge because of the "reach" factor a phone has over a dedicated device. So console makers have the hurdle of value *in certain markets*. Just like how the Wii leveraged something new and family friendly, and image of happiness and health, and Nintendo's Disney-like IP and it turned the industry sideways to a degree the industry faces similar challenges. But it has faced these over and over again. But treating the console industry as static would also be a mistake as the industry has seen the roll out of major innovations like Xbox Live, the influence on physical disk formats, and even recently the Kinect which is a huge success. So while the industry does have to face the issue of the more casual consumer (i.e. the ones who got a Wii because it was the device of the month and now want an iPad to play Angry Birds) these other markets aren't even close to competing at the software level that has a huge audience picking up the Madden, Halo, CoD, Gears, Assassin's Creed, Mass Effect, etc market.
Opinionated 2 cent is the home console market would also look healthier if there were fewer competitors. You have MS/Sony fighting essentially for the same market (which is quite large between the two) and, for Sony at least, really lost a grasp on the mainstream/casual/family market and Nintendo pretty much capturing that entire market but making absolutely zero headway in the remainder of the market (and now subsequently tanking in terms of the Wii). If I was the big publishers I would not be happy about the "Console" being effectively segregated along such lines, especially as 3rd parties are very much the 3rd wheel in the Nintendo ecosystem and the more expensive platforms they have to target two platforms. This fragmentation is something the phone market, Browser gaming market, and iPad market don't face to the same degree. The phone market may be segmented but it has 2 primary smart phone players and the "potential user" market is huge and the platforms are not pushed like the consoles in terms of budgets and technology and don't carry those expectations from consumers.