I bet Bill had the very expensive transplant surgery, where they go follicle by follicle and it takes an entire day to do like one small bald spot area. The catch is that if you are still losing hair when you get it, then in a few years it might look like a hair spot surrounded by a bald spot, etc. If you are rich (e.g. power 5 basketball coach) you can easily pay to have it done again and again as you age.