ISPs will provide service so long as it is profitable. It is not profitable to go to northern, remote areas through all the trees and terrain for the relatively few people who would be customers, even at 100% market share. If there was profit to be made by expanding to remote places, they'd be there already.
Although this thread is about Internet, this is also why it's incredibly stupid for people to whine about Canada Post not being profitable. Of course its not profitable, its a national service that services literally every unprofitable community and person in the country. Even with the recent price increase, it definitely costs a lot more than $1.24 for Canada Post to deliver a letter from Windsor to Iqaluit.
This is just one example of why Canada should not cozy up to China, as some have suggested in recent weeks. China is not an ally to Canada, to freedom, to democracy, or to human righta. We should never forget that their government held Michael Spavor and Michael Kovrig hostage. That's just what they've done to specific Canadians, they've done much worse to other people groups (Tibetans, Uighur) and their own citizens. As far as feasible, we should be avoiding China the way we are avoiding the USA. China is more enemy than friend.