What is the definition for "most" collectors...
Are you talking about the majority of collectors in general or you are talking about the majority of collectors who frequent this board and similar collectible boards?
The majority of die hard collectors who expect their purchases to increase in value, may not be representative of the majority of the collectors as a whole. Simply speaking from my own experience, most of the people I know who purchase items from Sideshow do not spend time thinking about if their collection will increase in value. While I do know some die hard collectors, the majority of folks I know buy 2-3 pieces from Sideshow annually. I would describe these folks as "casual" Sideshow customers. Again...just an observation from my perspective and perhaps not representative of the majority of forum members.
I'm not criticizing anyone who does care about future value of the collectibles....different strokes, for different folks. However, I'm not convinced that we can state or even imply that "most" or the "majority" of collectors will leave Sideshow because an increasing number of their products are offered on an open edition basis.
This business strategy may upset many of the die hard fans who frequent this board and other collectible boards, but will it negatively impact the majority of Sideshow's customers? I would not be surprised if casual buyers comprise the bulk of Sideshow's customer base. I admittedly have no financial information to back up that assertion...just a gut feeling.