Coldootside Coldootside:
^ that's interesting. But T.V doesn't usually shape your accent that dramatically IMO. It's more the people you interact with in real life. Funny that you say "pap" but I bet there's not a single American on the otherwise if the river that says "aboat". Weird huh?
TV doesn't shape it anymore because of cable. But when you are constantly bombarded with a particular accent, you start speaking in a similar manner. When it goes on for decades it can become a permanent accent.
When I go to Scotland it takes me less than 72 hours to slip comfortably into the accent and speech pattern of the area I stay. When I'm in Quebec for a length of time I start to sound like a Francophone speaking English with a French accent. Same when I lived among a bunch of Newfies. But once I leave Scotland or Quebec, those affectations go away. The Newfie accent though is still present when I say words like "car" or bar" and like I said, the Michigan accent creeps in once in a while with words like cop and pop. But that's because of years of constant exposure to both.
As for why the accent didn't go the other way is an easy answer. Sheer volume. A Metropolis of a few million people a mile away from a city of less than 200,000 at the time.