Excellent write up on the topic here although not clear on the regulation aspects, if any.

http://www.techcentral.co.za/how-africa-can-reap-the-dividend/38056/

"No spectrum licence, or a very nominal one, is required. This means new opportunities for small entrepreneurs to provide alternative access.
Great propagation. A typical TV white-spaces link can go 8-10km without any effort and is not obstructed by trees, buildings, etc.Innovation. Wi-Fi has gone from a niche spectrum for experiments to an industry that is expected to be worth over US$6bn in 2015.About 70% of smartphone data traffic in the rich world goes over Wi-Fi. This is what open spectrum offers.

TV white spaces has the potential to be another such industry because of the low barrier to entry.No spectrum refarming is required. Because TV white-paces technology is designed for secondary use of spectrum, there is no need to move the primary spectrum holder. This is a quick and easy win. Conflicts can be easily resolved by the regulator thanks to the authentication database."

./bernard