Depends on how big the bus is and the damage. :D
However, for me, lifetime means lifetime. If I can support it, I will.
Note: At the time of writing (Dec '18), I've updated 1CBC 16 times between 2015-2018 . I fully intend to keep going.
I don't work on 1CBC full-time, but I do use it frequently. The good thing with the video training is the principles I teach here will stand you in good stead with every other piece of Word-work that you do. Again, Word's easy, it's just been taught wrong.
From a purely support perspective, I'm skilled with Word and don't know that many who've got this level of knowledge and ability in this area (there are other aspects of Word where I lack the skills and experiences). So, though there's a knowledge base for the more common issues, there's just me for the complex ones.
(However, when I get so busy that I can't cope on my own, I'll hire and train a team.)