Yeah, the poll doesn't really hit what you are after. For instance, my wife is a voracious purchaser of DDMs. She has also recently gotten into the ebay market to find minis that we are missing. That being said, we would not buy individual minis from Wizards, nor would we have if they had started that way. We weren't really in the market for DDMs at that time. If it weren't for the numbers and price, we probably never would have started collecting them.
In fact, we prefer the randomization of the minis, as we get some enjoyment out of just opening the box and seeing what we got. Heck, you should have seen the sheer joy and exuberance that I exhibited when I got Warduke recently. My wife thought I had gone off the deep end.
So, my answer is no, but not because of the reason given in the poll. We would have continued to purchase metal minis.