This proves to be true in many businesses. I've personally seen this in the ski industry, lodging industry, office supply industry, and mini-golfing industry (hah). The business makes an effort to discount the price of entry in hopes of making that money back via the purchase of additional goods or services. Sometimes it works - many times it doesn't. A bargain hunter is a bargain hunter - very few hunt a bargain then splurge what they saved and more (you need them to spend more than they would have at regular price, in theory, to make it worthwhile to you, the businessman).
I believe Geoff addressed this point well in his post...the resort didn't get this money, the access road businesses did. This makes for a tough set-up for POWDR/SP. First they alienated those business owners who had lifetime passes, then they got rid of the cheap passes for strike two.
That's some bad mojo. But I don't think it's their fault and I would have made the same decisions in their position. They won't make any money selling those cheap passes.