Almost 25 years passed since embryonic stem cells were introduced to the world and 12 years since iPSCs were created by Shinya Yamanaka. Still 5-6 stem cells have the same gene expression and quality out of 100. So, it is not easy at all to produce stem cells in big numbers with same gene expression and quality. Also nobody knows how they will act inside of the body.
Yeah but thats quality maintained in a lab environment though no ? Presumably once the two types of cells are cloned and introduced into the scalp of the patient the body manages and regulates the cell function to full health .