mic089 - 4:15 am on Dec 19, 2010 (gmt 0)
I'd tell them that I wouldn't stock any of their products unless they made certain models only available to B&M retailers.
Do the laws in your country permit this? In Australia you'd trip one or more consumer protection laws.
I know of a distributor in Australia that will not sell certain models to online retailers (although I don't know that this is due to pressure/threats from B&M retailers).