Can ayone explain to me how someone like Richard Branson believes there are millionares and billionares who are just dying to spend $200k for 10 minutes of fun?

Can ayone explain to me how someone like Richard Branson believes there are millionares and billionares who are just dying to spend $200k for 10 minutes of fun? How could a successful entreprenuer think that there's a sustainable market launching people into weighlessness for 6 minutes? Get people into orbit for a day and you might have a more appealing vacation product, but I just can't see this being even close to market viable. To me, that seems obvious. What am I missing?