IMO, Wananchi getting hold of the license to roll out on KPLC's electricity network is very great. Compare that with the cost of obtaining way leaves and digging up trenches. Secondly, Wananchi also are quite affordable compared to the rest. 

In fact, as you have seen form the list , this guys are barely meeting demand. 

As for the rest, they decided not to share infrastructure, such that if ISP A lays fiber to your premise, they lock you down as if you plan to switch to ISP B, they also have to lay fiber . Looks very bright till you look at the cost of trenching and way leaves. Eventually, you lock down a few custiomers paying through the nose. 

Take the risk and have about 2-3 infrastructure companies for all ISPs, risk your competition sharking your customers, but have a lower capital ost and faster roll out hence new subscribers for all ISPs. 

Lets wait and see how this plays out. 

Also note that Telcos are able to cheaply cover customers put off by the prohibitive cost of ISPs, with satisfactory speeds on 3G and other related technologies. 

If I was a Carpenter ISP, and you were my lady prospective customer....