With all due respect to Laura, so many of these responses are coming across as patronizingly empty. I know it's obviously not an option to answer a question like this one with something more direct like "because we need to focus on our bottom line and we are betting on enough people still paying the outrageous prices regardless". Sadly, I have been one of them...but with a typical 7 day standard Caribbean cruise in a Celebrity Suite now coming out to around $14,000 for a couple, plus gratuities and in person tips...we are re-evaluating our future plans rather than continuing our 2 or 3 such cruises a year.
Many of us are just hoping the "because we can" business mentality will hopefully have a reasonably short shelf-life, and the cruise line will realize the pricing is short-sighted. That's my hope, anyway.