Does this “tug of war” refer to the idea that your body responds to fin by increasing 5AR enzymes and therefore DHT in response to finasteride? Or does this refer to the idea that even if you inhibit 70% DHT with fin, or 90% with dut, it simply may not be enough to stop genetic balding?
The later. Also it assumes that you can stop the Apoptosis (programmed cell death) that hit hair follicles after they go through a specific number of hair cycles that are programmed in our genetics. Generally, finasteride prolongs the growth cycle and reverses the miniaturization of those hairs that are miniaturized. Given time, if the genes are strongly influencing the hair follicles, these drugs may fail over time.