A lot of them are gone by their own choice though, not because they were forced to do so.
Still, we do have two retailers and 007 is going to open up their doors again, so it isn't like the sky has fallen yet.
Though, with recent events, Greylock's question of 'Why not wait a couple years?' to minors, may now have a better reason not to wait. A true case of 'Use it or lose it!'
We can't do much about it as a community... it's been tried. Just buy and sell while we still can and if it gets worse, we can deal with it then.