Because companies would definitely be able to entice potential/returning customers with the same old boring pose, iconic or not, over and over, statue after statue. Oh yea definitely. Let's all buy multiple Vader statues from different statue companies, all standing there in the same pose looking menacing. Just because it's a good pose doesn't mean it has to be the only one lol. The whole joy of having multiple companies doing the same character we statue collectors have come to love is that we've got a variety of options to choose from. Why plunge into an overly-saturated market with a tried and tested method when you can try a new one which may potentially create an even bigger splash? Which, from the looks of it, definitely has what it takes.