I am not convinced that the reason why informal sector is so big is cause somehow the formal sector industries are focused on return on capital. Or industries are dominated by one or two companies. I think informal is big cause
1. There are no dominant companies that have consolidated sectors.
2. There are hindrance to getting formal i.e taxes from corporate tax of 33% to PAYE which starts at the measly 14k salary.
3. No or not enough disruptive companies being started to become big enough to be formal.
We have a rapacious government that's taxing everything then following the classic liberal model of tax and spend. Ndii raved about milk ATM that were suppose to break up Brookside monopoly
http://www.nation.co.ke/oped/opinion/Western-Kenya-Sugarcane-Farming/440808-2850410-12agn4p/index.html, . He also argues that is very easy to make the kind of products Bidco makes which is true but just because its easy to make something doesnt mean that another company can easily replicate their success. Otherwise there wouldn't be P&G or Unilever of this world.