I see what you're saying, and I agree with you ... but, there's a counterpoint that I think needs to be made here.
When I see a book with a price of $80, it's well out of what I'd call my casual purchase range. It's totally reasonable that this needs to be the price, but I simply can't justify the purchase. And I know that I am pretty well-off, so I know that I can afford it, it just hits a price point where I need to think I'm going to use this book regularly. And I'm just not. I'd read it, and then it would go away on my bookshelf. That's, as my doctor said about chicken alfredo, too rich for my blood.
And there are a lot of products and services that are in this range. Even though the book needs to be that price for Paizo to make money, it is going to limit the audience. And I suspect that a year from now I'll be able to get it in a Humble Bundle like a lot of the other products I'd purchased previously.
And this is a much bigger discussion than just Paizo, so I'll cede that they aren't doing something wrong. But as we all know, you can do nothing wrong and still lose. Will they? Don't know. Hope not.