Hi Suwinto,
Unless you are part of a non-profit world, financial gains will always be the ultimate goal, now the strategic move that allows for the financial gain can follow several rationales, depending on the industry/business in question. I have seen acquisitions based solely on portfolio diversification, others based on diversification of revenue streams. In the end, companies are looking to fill some sort of gap they have. The determinants you are asking about are a result of these gaps.
