In any case the public is well used to power cuts and problems with fuel and transport. Most businesses, even small companies, are so used to mains supply failures that they have diesel generators as a back-up, while most domestic gas comes from bottles. So any problems caused by computer failure seem unlikely to make a difference. Similarly, the water supply is already poor in many parts of the country and does not rely on sophisticated computer systems that could go wrong. Many industries and consumers are reliant on bore-holes and water tankers and there is no national grid supply.
Transport is also unlikely to be affected.
There is no tube system or sophisticated bus network and many Nigerian airports do not use electronic systems such as computerised landing systems. Now we have arrested the situation adequately and therefore there is no cause for alarm and panic.