But if Disney plays its hand correctly, it can grab the visitors who thought that they were going to be "once in a lifetime guests" and convert them into lifetime visitors (and perhaps even sell them a DVC while they are down there). It behooves Disney not to accept the premise that any guest is a "once in a lifetime guest" and instead they should be doing everything they can to make those guests' visits as magical as possible so as to lure them back time and time again. But if you present the first time guest with 90 minute standby lines for major attractions and FPs for the Tea Cups, you are pretty much cementing in the notion that this guest isn't coming back.
I actually don't agree with this, and I say "actually" because I usually agree with you Jimmy

I think Disney knows that there is a portion of their guests that are "Once in a lifetime" and that will always be the case. I don't even think they care to try and convert them, that's part of their plan.
I mean, they only have so much capacity, and they don't want to waste the resources trying to convert people they have very little chance of converting from once in a lifetime to repeat customers.
They already have a well identified group of repeat customers, and probably more who self-select and join the repeat trip. A friend of mine was down for her first trip in Sept, loved it so much, and is heading again this Sept.
I just don't think Disney honestly cares about the average once in a life timer, they only care about the Brand, and the marketing etc. And lets face it, for most people the first, and in many cases only, trip to WDW is pretty damn special, even if you didn't really ride many rides I would imagine you could/would still have an awesome time, for a few days at least.