Interesting way to look at things; but you need to like those 5% who may like you. If for some reason you're less desireable than average then you also need to be less picky, and that may be hard.
If he only like 5% of the women he meets and 5% women like him in general than actual number of women he needs to meet could be 400 before both like each other. If he goes on a one date per week (the best case scenario, at least in my case) it would take 7.2 years of non stop dating.
One date a week isn't that bad. In fact, that would be great. 7.2 years to find that person isn't that long either. I mean that's 7.2 years of doing something I enjoy.
Hang on, we all enjoy the process of dating, right?