Re: "there are all of these special rules that apply."
Ill give you that the excuse was bogus, but there are already work around items that would make this dedicated service pointless and an extra cost that can be worked around. So google decided to not join in with paying more taxes to uncle sam and his local friends for 911 service, for those that truly want google voice at home as a landline A easy google search for "google voice adapter" will provide everything you need on page one!
they already pay taxes on their Voice services. Those are purchased from bandwidth.com - the company behind Republic Wireless and was the company behind Goog411. Remember the little advertising saying "your call is being connected by Bandwidth.com? They're the backend provider for the entire network of Google Voice.