That article HMorHT posted by Gho and Neumann explains the procedure. Basically they are doing a hair transplant, but with a very specialized procedure where the follicular unit (FU) is transected up-and-down. This allows some of the hair stem cells to remain behind with part of the follicle, ensuring that the donor site will regrow. The other part of the follicle gets implanted in the receptor site, and since it also contains hair stem cells, it also grows into a healthy follicle. So as Stevie Dee said, it looks like infinite donor supply is now a reality.
I think the problem with your way of thinking is that you are comparing two things (ACell and Histogen) which are only pie-in-the-sky ideas that are currently being HYPED up as potential cures with no evidence, with HST, something that appears to be an actual cure that exists right now, and with good evidence to support it.
Part of the big evidence that convinced me about Gho is that Hasci WON a lawsuit about this recently. The complaint was filed by a group of European hair transplant clinics against Gho for "false advertising" about this HST procedure. The competitors said Hasci was misrepresenting the results, but the Dutch adjudicators found that Hasci was telling the truth.
I think that, and the website with the photos, is some very strong evidence right there.
roger_that is located in MARYLAND and he is available to meet: YES
email email@example.com to arrange a meeting.