I think one of the most lucrative business is selling of food because whether the economy is good or bad people must consume food and people must eat so if you sell food you must always have customers.Most times you only see them doing their jobs maybe during the last Saturdays which is a national sanitation day in my country.and the way the go about it is by breaking down these setups, it's just inhumane to me, there are betters ways to go about it