It's not impossible. You could have asked the same question of ManU, Chelsea,Arsenal and ManCity a hundred years ago and it would have seemed a very fanciful suggestion.How long it takes and what needs to change is another matter, The current pecking order, which probably has as much to do with TV rights as anything, is geared towards the status quo being preserved. It will probably take quite a few things to change, but BT kicking Sky to one side is probably one of them.
It's not that long ago that people asked if anyone other than Liverpool would win, then it was ManU, then Chelsea joined the club, now it's ManC, Arse have been there or thereabouts for ages. Anything is possible, over the last 40 years, ten different clubs have won the league. Villa, Forest, Everton, Liverpool, Blackburn, Leeds, Arsenal, Man U, Man C, and Chelsea.It feels like nobody will win it other than last year's top 4 but anything could happen.