To be honest, I think it would be more accurate NOT to give Norway and Sweden the Frontier bonus, simply by making all their provinces cities. This is too easily abused anyway, when you consider that this frontier bonus is really intended to be used in their core lands. If the Swedish player manages to expand far into Russia, sure, he can have frontier bonus.
But as I said, too much of an exploit to just not upgrade Lappland, and get that +1 colonist for hundred of years. This is specially true for North Norway.