Why is it a given that such names are extortionate? Whatever the wisdom (or not) of opening up the top-level hierarchy, there's a place for sites saying things

Why is it a given that such names are extortionate? Whatever the wisdom (or not) of opening up the top-level hierarchy, there's a place for sites saying things suck. If companies want to engage in the futile enterprise of buying up and controlling every name that might host a site that could be critical, they don't deserve sympathy.