I don't really want to get into this argument but statements like this really annoy me.
Share the source. You can't claim that something backs up your argument by simply saying "well I read it somewhere" or just wildly proclaiming research has been done without at least saying where you found or heard of such research.
Maybe you should quote everyone in this thread, I haven't seen a link to any site so far.
Anyway, its nothing I've read recently so I can't remember the source, so I just did a google for you instead.
http://kotaku.com/gaming/study/a-renter-does-not-a-buyer-make-327422.php
Colin Campbell takes a look at the trade that's costing this business over $1 billion a year.
http://www.next-gen.biz/index.php?option=com_content&task=view&id=8632&Itemid=2&limit=1&limitstart=0