"Going truly global gives you a huge advantage, but it is difficult to implement, " says the Brazilian-born, Lebanese-raised, French-educated Ghosn.

FORBES: Gambatte!

The area was so neglected in the past, Mr Syaukani complains, that it is difficult to find skilled locals to implement his policies.

ECONOMIST: How far should regional autonomy go?

"Even when there are no financial constraints, if these drugs are freely available, it is very, very difficult to actually implement the programme, " said Donald de Korte, a former head of US drugs firm Merck in South Africa who is running a pilot scheme.

BBC: Africa's Aids drugs debate heats up

Given the often complex pricing plans mobile phone vendors implement, it is usually very difficult to react to market conditions as quickly as the aforementioned case demonstrates.

FORBES: To Churn or Not to Churn, That is the Question

It is a given that corporate responsibility initiatives or human resources initiatives are complex and difficult to implement.

FORBES: Making the "Body Corporate" Healthy Starts with Employees

The principle of least privilege is not an especially difficult concept to grasp but it can be a real nightmare to implement.

FORBES: Teach Your Boss To Speak Security: "Least Privilege"