Nairobi, Aug. 11 -- Something significant has been happening around East Africa's established businesses. Regional and international groups have been acquiring controlling interests or increasing substantial shareholdings. These developments point to changes in ownership across the region and raise questions for the institutions affected and their boards.

An established business offers what takes years to build - licences, customers and distribution networks.

But much of its true value is intangible: local knowledge, relationships, management capability, institutional memory, reputation and trust accumulated over decades. In East Africa, these attributes are not soft extras.

They shape regulatory confidence, loyalty, commitment and exe...