Yep that norrows it down but still it's enough to make riken / kyocera quite rich.I thought it went without saying most of the Japan will not be able to afford this as their average salaries are actually I believe less then Americas and this is even though they dont have the travel cost which if your (assuming this is well over 100k) willing to pay that much for the treatment the flight and stay isn't even going to be an object they kind of even out at that point somewhat.
It may be easy for him to find a couple million people to sign up for this in Japan but I think it'll be more complicated than that international certainly just in Japan I doubt it. Japan has 144 million people we can cut most women out most children will be out. What's the prevalence of male pattern baldness in the Japenese people? How many can actually afford that and of the people that can afford it how many are balding and of those balding how many give a f***? How many who meet all the requirements above will even hear about it? Kinda narrows it down wouldn't you say.
The only thing we should be excited for at the time being is the momentum this will bring on to the hairloss research world. While tsuji can patent the technology that mass produces the follicles and thus industrialize this, he can't patent the science behind it and that's certainly a good thing for everyone it will draw more attention to other companies that will start thinking about their own piece of the pie.