This isn't a schoolyard playground. We don't have to play fair and treat these megacorporation with kid gloves. When the shoe is on the other foot, corporations don't play fair with us. "Fair" doesn't even come into the picture when they are in the conference room deciding their prices and terms. So why should the government treat them fairly when it comes to a regulatory solution?
And no cross subsidisation.
(I meant “fair to competitors”, but I think you thought I meant “fair to the infrastructure owner”.)
Actually many places offer choice between cable and DSL variants. But once there is fiber in the ground it actually doesn't make much sense to go with anything else, so choices disappear (only for connection type, not ISP). With fiber it's much cheaper to provide high speed access (and there is a much clearer update path).