"If processes and values were the reason for success, let the acquired business stand alone." #readingToday
If the acquired company's processes and values are the real drivers of its success, then the last thing the acquiring manager wants to do is to integrate the company into the new parent organization. Integration will vaporize many of the processes and values of the acquired firm as its managers are required to adopt the buyer's way of doing business and have their new-growth proposals evaluated according to the decision criteria of the acquiring company. If its processes and values were the reason for its historical success, a better strategy is to let the acquired business stand alone, and for the parent to infuse its resources into the acquired firm's processes and values. This strategy , in essence, truly constitutes the acquisition of new capabilities.
The Innovator's Solution, Clayton Christensen