Yes the plan you mention, which includes a modem, does seem good. However it does nothing for the customers who do not have the ability to put in a landline and rely on the fully wireless 4G option which they are currently on.
@livingskinny: this ^^
I refuse to pay Chorus $2,600 to connect 1/2m between my copper wire and theirs, so my only option (until RBI2 fibre in 2020 for me) is a 'fixed wireless' link. If you can offer it to mobile customers, why not to fixed wireless ones too?