I read it at about 3am today, 12th October 2017. It's now about 5am, and I haven't been able to sleep since. So I've decided to write down the thoughts that have kept me awake. Firstly I will give highlights of the article. Then I will comment. Highlights: 1. 90% of the networth of Africa's richest man, Aliko Dangote, comes from his cement business. 2. Dangote Cement controls 65% of Nigeria's entire cement market. 3. In 2013, Dangote Cement had the highest profit margins of any cement producer on earth - 52%. China's Anhui Cunch Cement came in second - at 17.8%. 4. In 2015, average profit margins of cement producers worldwide was 17.2%. Same 2015, Dangote Cement *reported* a profit of 42.3%. 5. In June 2016, the World Bank reported that cement prices in Africa averaged $9.57 per 50kg bag while the world was paying $3.25 (about one third of what Africans pay) 6. How has Dangote Cement been able to retain such a huge market share at such excessively high p