Unless you can manipulate the expression of genes, the thought of eradicating baldness will be difficult to execute.
There is no cure for being tall, short, having a particular eye color or having a certain skin color. These are all dictated by way of your genetics and while you can do much to camouflage their expression, it is what it is.
These drugs, that suppress conversion of Testosterone to its byproduct of DHT, can only keep your existing hairs on life support. The reality of it is that none of these drugs offer complete suppression of DHT, so even if minute amounts are getting to the hair follicle, sooner or later that hair follicle will succumb to the effects of DHT. In other words, the inevitable cannot be prevented.
You gentlemen are just cruising on borrowed time and crushing your libido in the process.
My advice, shave it off and move on with your life. Soul Crusher is a great example of a young man that sports his shaved head with pride.
"1"
P.S. I did read a while back that they were trying experiments with stem cells for the goal of eradicating hair loss. Whether or not that went anywhere is beyond me.