It's probably not quite that bad although, given the plane doesn't exist, we're speaking in hypotheticals anyway. As I recall, the Concorde was something like 30% more than a first class ticket. It's hard to imagine such a thing being built in the foreseeable future unless there are radical breakthroughs that totally change air travel economics.
As I said elsewhere on the thread, for most people under most circumstances, the main thing is the overall travel experience rather than the number of hours. I don't find flying business transpacific all that unpleasant--just boring. And the first class setups for some of the Asian etc. carriers who have 3-class configurations look pretty amazing though I've never experienced them first-hand. The technology and capability exists to make long-haul air travel almost arbitrarily comfortable (and connected). It's just a case of how much money a large enough segment of travelers are will to pay.
