Hard to believe
That Canada once had global leading telecommunications infrastructure. 20 years of incompetent and/or corrupt (I prefer to believe my politicians are corrupt than stupid) we don't even rival the 3rd world.
By the way the 20% of rural Canadians are not in "polar bear and no roads" type places. Most of us are within 100 km of a major city and a few km of a town.
Regardless, we somehow managed to provide almost everybody with electricity and telephone service at a time when infrastructure was build by men with shovels.
Perhaps the politicians were a tad less corrupt, or realized serving the country was important, back then.