This was a great read.
A few years out of school, I took a detour from tech/entrepreneurship to work in my family business (overseeing operations in a construction manufacturing facility, in Egypt), mostly with my Uncle. In my case, though I fully prefer tech as an industry, the deal-breakers were a dismal economic/political climate and an... interesting Uncle.
Apart from that, a lot of the article resonated. A few other things that stood out and made the transition hard for me were: corruption (in the construction industry, hard to avoid) and culture/hierarchy.