when a person maxes out the # of strip procedures (FUT) available to him, he can start doing FUE's (follicular unit extraction). So an individual shouldn't feel totally limited by the fact that he/she can only have a finite # of strips removed (before the scalp tightens up to its max amount). You can start moving around individual hair follicles at that time by method of FUE. It is more expensive but an option. Your scalp is your canvas, essentially, for the rest of your life!
just some thoughts--
The only downside is that FUE is significantly more expensive and you wouldn't be getting as many hairs transplanted for your money. The plus side to FUE is that its an easier surgery and minimal scarring, as it is less invasive.
So for example, in my case, I would do the 3-4 strip procedures I discussed with Dr Mohebi, and then if I continue to need more work, I can start doing FUE (my scalp tightens too much). (Hopefully by the time I need FUE I'd be making more money and can afford the procedure more easily anyway, haha).