Not yet, but when they do, each railroad tie (railway sleeper) will have a serial number printed on it and can only be replaced with genuine Apple® railroad ties.
If they did, the software would be fine. They'd just be held together with adhesives to make repair far harder than necessarily. And nobody would be able to sell spare parts.
You’d be able to get in to the driver’s cab by just pressing Enter on the keypad
No, until they could make a proprietary tracks, on which no other train would work.
You’re describing maglev
I think you mean MacLev.
MACGRUBBBER!
Unless forced by the EU to use standard tracks, in which case all their trains will run at half-speed.