I'm sure you're correct. That said, I saw a friend who went bald at 28 get all of his hair back from Minoxidil + finasteride. Maybe his folicles weren't closed/gone but he was bald and a year later, was not.

Apparently there's also now-a-days, Micro-needling, Stem Cell Therapy, Platelet-Rich Plasma, and others. No idea how effective they actually are