if by "k-2 start from" you mean the origin ofthe name, then I think the name was choosen by the founders in reference to the K2, the mountain, I mean.
Research Dynamics, I don't know of.
Yes, skis are still build in the US, just look around here and you'll find names like "Iggy"...http://www.igneousskis.com/
I thouhgt they had closed down a while ago, but apparently they are back in business...
Like them other small firms are around on both sides of the pond...and I hope it will stay like that.