Like it was said, the high prices keep middle class pleebs off the hill and out of the village. They offer so much more than skiing so when the crowd is made up of rich folks, more money will be spent than when there's a variety of people. They also need to fund their massive new lodge, hotel, and other additions to the village and make up for going way over budget on snowmaking last year. So there's a lot of reasons and if you can't afford it, that's not their problem because someone else can.
That being said, Stowe isn't all ritzy. It's split between two mountains and the village is only on one so us college kids who couldn't care less about the village and its authentic fur shops can avoid it all and just ski some killer terrain.
So yeah, it is some "Vail shit" but that's exactly what they're going for. You get what you pay for.