Do you have kids, nephews, nieces, cousins, brothers, sisters, or friends?
Are you one of those good students that explain math problems to other fellows?
Have you ever taught to anyone how to use a smartphone, laptop, play a game, cook, or have you indicated to anyone how to go to school?
Are you the kind of friend who always listens, cries and celebrates at your friends´ lives?
If you answer YES to at least one of the questions above, chances are you are already in the “Capacity Building” business and you didn´t even know.
There are two ways to actually help someone to improve abilities, it can be done intentionally (as your job), or unintentionally (when nobody pays for it)
The point here is that you build (or destroy) capacity whether you like it or not, whether you are paid for it or for free.
It is just natural, unavoidable.