I don't find it that difficult to understand what Dave is saying.
While admitting that RCI does do rentals, he is also saying that their is a lot of scapegoating going on.
It is hard to find a thread on TUG where, as soon as someone mentions that they are having difficulty getting a trade, someone chimes in "RCI must have rented what you are looking for." Is that really the only thing that is going on? No one lacks trading power? Summer beach weeks haven't always been hard to get? And ... as Dave mentions, with the advent of the Internet, it has become very easy for people to rent their own units. Are we saying that when growing numbers of people decide that they can easily rent via the Internet, this has no impact on availability? (Yes, one poster is going to say that the Internet has had no impact on timesharing. I don't buy that for a moment.)
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I might add another factor that has impacted trading patterns. Online trading. At first, when only a small number of people used it and saw what was sitting untaken, it was a real bonanza. On the other hand, when online trading began to really take hold, and lots of people begin to shop around, people begin to notice that the better units were getting harder and harder to get. More and more people were searching around for the best trade they could get as opposed to just asking RCI for a possible trade at some one location. Guess what happens when lots of people start shopping and see that they can trade for something they did not imagine was available? The really good trades disappear faster and faster.
As an aside, when I first mentioned this, I was told - in a very condenscening fashion, I might add - that the growing popularity of online trading had no impact on the availability of good units - it was because Points owners were raiding the Weeks inventory. At that time, about one-half of one percent of RCI owners had Points units, but online trading was approaching ten percent - a milestone where the ordinary Joe was beginning to participate in shopping around. But - as Dave mentioned - people don't want to look in the mirror and admit that the practices that they themselves participate in might be having some sort of overall negative impact. Better to scapegoat. So there were mobs (I think that is the appropriate word) of TUGGERs who were willing to accept that the good trades were disappearing from the online board because Points (one half on one percent) was raiding Weeks. I am sorry. I believed and still believe that when just a few people were knowledgeable enough to shop around for the best unit available via online trading, they, not surprisingly, found good units sitting there. When the number of shoppers increased, the good units got taken faster. Rather than look in the mirror, find a scapegoat.