I hope it's more a sign of the video game market getting more diverse. I don't want Sony and Microsoft to copy the Wii-mote. If I want a wii-mote i'll buy a Wii. What some people don't seem to accept is that not everyone loves the Wii-mote and believes that every game should use that sort of control scheme. Same way that a lot of people would love to wii-mote everything. Why can't we have a market sector that's nintendo motion controls and Sony/Microsoft control pad. Surely with the increase in market size it's possible to make a profit off both ways.
Personally I hope the PS4 is more powerful, has more multimedia functions (dvr?) built in and has a faster blu-ray drive so we don't need installs. For someone like me the PS3 is incredible value for money for what it does.
I suppose eventually motion type controls are going to be the future, but I don't see the Wii-mote being good enough yet so I don't want to see a copy.
Yes