reason I see a grim future for Sony is because they seem to be backing two things that are doomed for failure.
The first is the 3D, which although cool, requires a $3000 investment just to utilize it. Nobody is going to invest in this, so I agree with the article that Sony is simply wasting resources venturing in a field that nobody is going to take part in. Also, Nintendo has already one upped them in making a handheld capable of 3D, with no stupid glasses, and a mere fraction of the cost. Nintendo has taken away the edge from Sony's 3D, and they have barely even started using it yet.
The second one, the Move, is going to fail. Why? Several reasons, but the main reason is the Wii has already done this. It is lacking the "new" factor. Sony just naively thinks that now that THEY are making motion controls, they will be successful like Nintendo. But really it comes down to the GAMES. I have seen no games that have shown Sony is serious about motion control. They are all cheap Wii imitators or traditional core games with motion control tacked on. Sony is trying to appeal to core AND casual gamers, but the irony is they will get neither. Many core users on their system didn't like Wii motion controls, so why would they like SONY motion controls? The casual audience is already on Wii, so why would they invest $400 for a new console that does the same thing as Wii? HD graphics? Please..
Let's not forget, Sony already tried motion control with the PS3.. it was called the Sixaxis, and guess what? It failed. What makes people think now that the Sixaxsis it cut in two and more advanced, it will be successful? Sony's has also had motion control with the PS Eye, and that also wasn't successful.
To put it bluntly, Sony is going to at the very least be very crippled when these two main ventures end up backfiring on them, and because of this, I don't see a PS4 coming anytime soon, if ever. What they should focus on is GAMES. These are the true reasons people will buy a PS3. Not expensive extra features like 3D that 99% of people will not use, or motion control technology that is 4 years old. Sony is taking risks, which I guess is a good thing, but they are taking risks on the wrong things IMO.