Long-term drug use for hair loss

What is the long term perspective for someone who responds to common treatments like fin and min? Lets say a person starts these treatments at 30. Will they preserve their thickness into their 50s and 60s? Or they just delay the inevitable balding by 5-10 years?

I have been in the hair restoration field for 33 years and have seen it all. Men on Finasteride for life see a reduction of their end-stage bading pattern. Although the hair loss process continues, it is slowed down significantly with age. I have patients that have been on finasteride 25 years, and a few decided to stop it only to find significant hair loss occurs within 3 months of the date they stopped the drug. The same can be said with minoxidil or both in combination.