If whiskey does change in the bottle, which has become the focus of much of this thread, it doesn't change very much, unlike wine which can change a lot or even, if aged too long or under bad conditions, spoil.
The most significant difference between the two beverages that accounts for this difference is alcohol concentration. Wine is typically 12% alcohol, which is pretty good at stopping some microorganisms, but can't, for example, stop the Acetobacter bacteria from turning the alcohol into acid and thus converting the wine into vinegar. Whiskey in the bottle is at least 40% alcohol and often more. That's enough to kill all the little beasties.
That all wine ages in the bottle is another myth. Only a few wines improve in the bottle, while most change little or at all, except in bad ways.