>> Seems to mee, that the market is more risky than some years ago.
You are correct - I do not see the console gaming business as a future growth business. There are many competitions right and left that they are all flanked. The opportunity for them will be in their libraries of games, getting to work in tablets and finding a new console that can be flugged into mobile devices
All games are computers packaged in a special way. Yet, the future of game console will be tested as the handheld "mobile devices" continue to become more powerful. I think in five years, they will have interface to connect games in tablets.
Most of these devices are reaching dimishing returns in the hardware differentiation. What will be the different will be the software. I think the hardwre is improving for all the makers. Game library will influence the decision on which one to buy
For me the interesting part is, that both companies make profit by selling consoles. The older generations of consoles where sold with a caluculated loss (PS3, PS2, Xbox360 and Xbox, not sure about older and Sega Systems. The 3DS was the first System Nintendo had to sell with a loss - Nintendo doesn't do this normally).
Seems to mee, that the market is more risky than some years ago. They decided to play a more safe game (financally) than for other consoles.
without raw purchasing statistics, just going from all the gamers I know I'd agree that it is pretty split. People tend to talk about their nintendo like it is on a completely different level than the xbox and playstation as well. They don't really see nintendo as competing for the same role.
>> How is the sales difference betweent two devices, does people buy more Xbox than PSs.
So far, nearly even. No one is buying more. I think Wii is getting out of this equation now. Microsoft has mussled itself into the gaming equation and is excellently holding up to the Asian competitors in this business.