Doom and gloom. Phones and tablets for gaming! No, not really. Whoever thought that doesnt know how to play games.
Wether they sell more or not its irrelevant. A phone is a multi-use device, not a games console, a tablet is the same. The revenue they generate is not on the same level in terms of software. Just cause you have some funny distraction games doesnt mean gamers will actually addear to these as game consoles. They just dont have the controls for it. You need buttons. At the end of the day, the main use of phones is to contact others and of tablets to work/replace a complicated PC. They are not viable gaming platforms, they are a fad.