Just knowing it's an option will dramaticaly alter the idea of going bald. Like if you start receding at 20 or younger you can think well it's ok because I can always get it sorted in a few years if it's gets too bad. And evertime you see a bald or badling guy you will think, well that's not such a big thing because with a bit of money he can have hair if he wants.
Women will be able to look at bald guys and think about what they will look like with hair for their wddding day and not worry about their kids being premature slap heads.
And then baldness will just be an affliction of the poor or a sign that a guy truly doesn't give a f*** about it. Or, imgine this, it becomes fashionable in some twisted way.
All positive except the poor thing. But I think there could be a "Hair for the Homeless" goverment program set up.
It terms of timelines. We don't have a secure base yet to predict from so all predictions are pure guess work. It might take 50, 100, 200 years. Seems unlikley, I know, but at the other end of the spectrum someone might find a way to do it tommorow with existing technologies that doesn't need FDA apporval.
The way I look at it every failure is a step closer. It's a problem and the more man hours and resources you spend on it the higher the chance of success.
"If you want to increase your success rate, double your failure rate".