I'm not sure that "duopoly" is particularly accurate given that most people in this country have have 4 or 5 wireless competitors serving their home area.

Still removing the antiquated protectionist rules that "protect" our incumbent telecommunication companies from too much competition is certainly the one and only thing that will truly help here.  The Conservatives made some tiny baby-steps forward here, though they were so small as to be rather disappointing even if they were in the right direction.

As for this Liberal plan, it will be pretty much completely ineffectual.  If it lowers bills for anyone it will be by trivial amounts for a very tiny proportion of the population.