Making the example a bit more realistic

What??? You don't have Robo-Reindeer pulling your sleigh?

are in fact a *nix Reindeer and a MSWin Reindeer

Ah yes!
I totally understand when a Factory Class would be useful now. Not necessarily because of what modules are or are not installed but because of the environment in which the script might find itself with different OS, hardware, drivers or even other software...

Thanks