I can't speak for everyone but for sure ES plays a part in whether I get a piece sooner or later and sometimes sways my decision on pieces I am unsure about.
For instance, I would never have jumped at Optimus Ex at launch if he was open Edition size at that price point and wouldn't have him today.
Although I'm lucky and never forsee myself ever selling a piece, you can never tell down the road. I know a friend who got hit hard by the recession who managed to stay afloat by selling his collection. It's nice to know that in a market of consumerism driven mass production, some things still hold their value and I believe those rare items should be treasured, and that's why I feel Sideshow moving the LSF line to an open edition is detrimental since we'll never see another iteration of Wolvie while this one is on sale (brown suit or otherwise). Why would they compete with their own product?
Also if everything was open ES, Doom Ex would not be a grail and would still be available from the Sideshow website for cheap but their PF line would never have taken off either because they will no longer be a limited collectible company which is part of what drives their sales.
One thing is for sure tho' this will never go up in price for years to come and with no numbers on the base, it just becomes another mass produced piece of polystone that can be easily recasted if the price ever rises. I'm sure a couple of bargains on E-bay will come up and the secondary market price will never surpass the original price for the years while this is still in stock in Sideshow.
So it's actually a good thing for those without a place to put him for the moment, to see what comes out down the line or waiting for another priority item.
At this rate, they won't make many pieces in the LSF line since everything is available for years to come.