Seeing as they'd have 2 shots on the black it'd be pretty much a default loss anyway, although there is always scope to fuck things up.
Yes.
I sort of understand what James is getting at, but I guess the rule derives mainly from the game ending nature of the foul and the fact that pub tables don't give you the ball back. Interestingly, if you manage to get the black to leave the table it gets put back on its spot. Obviously a fairly unusual occurrence.