To go on a bit of a rant, I personally think it's the most ***-backwards thing that in the 21st century, doctors still waste their time researching treatments for hairloss with f*****g topicals or oral drugs. It gives me eyeball AIDS every time I read some interesting piece of research where it ends with "We hope to create a topical solution or maybe some sort of drug one day..."
There is nothing wrong with topicals or even oral drugs, a bald scalp still has follicle stem cells but with proginator cells lacking. The problem is that most medicine (not just hairloss) works on treating the symptoms rather than finding the cause as the later is much more complex. However it is conceivable if the cause is found and rectified via chemical molecule that could be applied topically.
As for Tsuji, as impressive as it is it is basically a very sophisticated hair transplant that requires an invasive procedure. Likewise follica is hardly awe inspiring either in its wounding technology. Neither of these addresses the causes.
So a topical cure is certainly possible and is in fact desirable, however we're probably looking at decades as it will only happen when we fully understand the genetics behind hairloss.