Silverlight is irrelevant, has always been, will always be. Maybe it won't completely "go away", but anyone who is betting a farm on it is an idiot that deserves what is coming at him (yes, him, women wouldn't be that stupid).
I have to agree though that it doesn't really make sense to use Silverlight for anything else, although Bing Maps is pretty impressive.
I don't support restrictive DRM, but Netflix does have to bow to their content owners to stay in business
Lets put it this way, there are 500M or so Silverlight enabled desktops. There aren't many things you can target that have such a large user base.